I'm just doing a mess here with this:
PERFORMANCE POINTS MUST STAY.
Performance Points (PPT in following txt) are one of the most important things that have ever happen to Gran Turismo, and although they're not something unique to GT series, they're extremely important for game such as GT from many reasons.
However, they need some adjustment, and those adjustment should happen on
more fields than just car.
And if you're really interested in that matter, take some time to read the following. I know it's a lengthy read but this subject needs some further explanations to make it clear.
I have personally thought about that matter since GT4 and problems that me and my crew had with LAN races. Main problem is that almost all of us are good drivers that drive somewhat same times. Problem that arises is that we just can't drive different cars because there is always difference in performance. Even two different Castrol JGTC Supras from the same year differ (for example Denso and Woodone where Woodone is more than 1 sec faster in average) while difference is even more visible on the street cars.
Hence, in order to make racing "fair" - without anybody being favored because of the car - you have to use the same car for everyone. Which is bad and wrong, since it limits you so much when you race the people who are on the same level as you. Especially in the game with so many different cars that more-less belong in the same "class".
In conclusion, PPT system is something that game as Gran Turismo needs in so many fields - including most important for the future - online racing in private rooms.
But what should be done in order to move if from being so
basic and
limited in true balancing as it is now?
It needs readjustment.
As you're maybe aware, PPT system in Gran Turismo 5: Prologue is
working in almost exact way as A-Spec points were
working in GT4 game - only made to work in "reverse" (A-Spec points were determined with exactly the same factors: power, weight, tire type and usage and values of aerodynamic parts).
Difference is that PPT in GT5

are not any more
description factor of particular car (in GT4 A-Spec points were showing you the relation of your car performance opposite to other cars in particular race), but somehow also a
limiting factor for particular race.
Ergo, after doing some thinking and analysis, here are my
conclusions:
- PPT system
needs inclusion of 3 new "group of factors" (4
factors in total) that would be calculated into overall PPT value of particular car besides those already existing in the game:
- every car starts with
first basic factor which is
existing type of PPT calculation and that number is foundation for further calculations. However, fact that game actually have 3 basic types of cars - street, tuned and racing cars - needs further differentiating between them. So, street cars would not gain any handicap for their PPT, while Tuned cars would get PP25 for example and racing cars would gain PP40 for the "handicap". Notice you could actually lower your PP at Tuned or Race Cars by adjusting aerodynamic values during QTS, while any street car would become Tuned if new parts would be added in Manufacturers/Tuners sections of Gran Turismo mode.
-
second one is something I call
"Index Value of the Drive" (IVD). IVD is a more-less a coefficient that gives multiplier value to the drive of particular car. Every type of drive - FF, FR, MR, RR or 4WD - has it's advantage over other in purely driving-performance ways, so PPT system needs inclusion of IVD which gives new variable into PPT calculation,
-
third one is
"Assists Usage Value" (AUV). Rule is: less assists, less PPT. So, if you're not using any of the assists, you have some more PPT so use in fields such as HP, weight or tire type. Every assists would add it's own value to overall PPT based on it's true
advantagement: for example, turning-off ACS would give you 5 more PPT to spent, TCS 7 PPT, and ABS 15 PPT. That way players who do not use assists would get a "reward" for it and it would make them more competitive to assisted-players in the end.
And above concludes PPT calculations that should be done related to particular car. But it needs
something more in order to be accurate and usable.
-
fourth factor is
"Track Value Index" (TVD), being almost important as "basic PPT" of the car. In order to make PPR system of any kind truly work for multiplayer races and allow usage of different cars for different races, you have to put car's PT (done as described above)
in correlation with the particular track.
TVD would clearly need to be decimal number less than 1, where value of "1" should be given only to ideal straight track, without any elevations. TVD should be calculated from few variables of each track - pretty much on the same way as basic PPT is calculated for the car - number of turns, overall elevation, overall number of turns with less than 90 degrees, 120 degrees, 150 degrees and U-turns and overall lenghts of every straight.
For example, Test Track would than have TVD of 0,20, Deep Forest 0,65 while Nurburgring would have 0,32. That said, it is clear that TVD would in fact have to be present in every phase of PPT calculation before one particular race.
Although it sounds complicating, it is not. Only two factors that players can actually mess with prior to particular race are basic PPT and AUV. Other two - IVD and TVD - are nominated with the very choice of the car/track and other two are basically adjusting to them.
With careful calculations of described factors, it would certanly cause the real gap between cars to equalize in positive matter.
Of course, all values for new factors I've introduced are purely theoretical and have not been calculated with any comprehensive method.
However, it is clear that system as described would resolve all problems that can arise from idea to race the different cars on the same track under same conditions.
Thank you for reading, feel free to comment.