These rare cars can be just put on at level 10 of manufacturer affinity (idk maybe something like driving 100 mi with that manufacturer), after which you can unlock it.
Any levels above that should just be prestige levels with credit rewards.
Online should have the ability to rent such cars (as in fm7, but with atleast tuning unlocked along with paint, If not upgrades).
The problem here is that some part of the playerbase essentially wants an FM4 v2. While others want something akin to ACC/iRacing with a slightly wider scope. There are smaller groups taht want some other things but the above mentioned groups are the two biggest ones. It's basically turned into where the "game" aspect of the racing game should get priority or the "racing" aspect should be prioritized. I don't trust any gaming/sim company to be able to find that balance because it is extremely thin, if it even exists. T10 has to probably commit to one side completely, because otherwise no one will be sufficiently satisfied.
This is like my wishlist but:
FM4/7's career event variety
FM7's free play (with pc2 levels of customizability)
Gt sport/iracing rating systems
Expanded car variety (Fm7/4, Gt4/5/6 all do this well)
F1's sponsor systems along with garage/pre race gameplay
A neat and snappy menu system a la FM6 (with Fm4/6 music) with most features like auction
Expanded tuning and customization from fm7.
I'm probably forgetting some, but if they can give 70% of this wishlist, I will be satisfied (not like I have many choices for controller on pc)
I agree, I've mentioned several times I feel like the divide in the community pulling opposite directions is a big challenge for where the series (and "simcade" or whatever you want to call it) is at right now, with some pulling for heavier multiplayer push and more GTS elements, while others want a big checklist of events to do and more single player "progression" and some wanting it to evolve into a hardcore sim and so on.
It is an incredibly hard balance for them to get right, but I feel like it's kinda logical to lean on the "racing" side of things, as, to me anyways, that covers off some of the other elements. Like a racing game with bad racing will be lame regardless of how much content/career mode/whatever it has, but a racing game with fantastic racing would help me overlook a lackluster career progression or limited content selection or whatever. Same logic applies to whatever the "core" gameplay mechanic is in any genre of game. Like a fighting game with crap controls and boring copy/paste reskinned characters with no moveset variety isn't going to be fun just because the story is 20 hours long, you unlock new reskinned characters sometimes and there are 4 different modes to play.
The racing vs gaming thing also shows up in how people view progression too though. The gaming side will often see progression as earning prizes and unlocking stuff, while the racing side will often see progression as getting faster, crashing less, earning podiums, winning multiplayer lobbies, and so on.
I think sometimes there is a lack of frame of reference (or whatever you want to call it, my brain is fried it has been a long day) when discussing this stuff too. Obviously a balance is good and there is a way to lock content that doesn't feel excessive, but it can be hard to tell just how much others are talking about... Like when someone says "make the level 50 car exclusive" then how long is that really? Everyone has different commitments and free time, so for some that might not seem excessive but others hear that and think "I won't have time for that!" But if you level up super fast, that might not really take long at all. Also I feel like people can be go to extremes, and arguing against some locked content spurs people to think you want everything unlocked and free instantly and etc.
I've helped organize a racing league for the last 12 or so years on Forza, and we have had a few hundred drivers during that time and I've seen all types, from people who play a 5 hours a day to people who do the organized racing because they only have an hour or two a week and want to make sure it's used on quality racing. It's not a fun position to be in when you are trying to organize a series for 30-40 people and you either need to tell some people they can't race because they don't have time to plow through career mode or weren't around to have earned the car needed when it was an exclusive prize, or to throw out the car entirely so no one can use it, as we have had to do a few times in FM7.