What's the point of collecting cars when they are all served in a platter on the Arcade Mode? Wouldn't that spoil what is essentially the bread and butter of GT - working your way up and saving for the cars you want?
Having seen the stream, the AI needs to be reworked.
But maybe for you, it is enjoyable beating mediocre AI in Racing Super Softs.
Think of it this way - if GT7 goes the GT4 route where collecting cars in the Simulation/Campaign Mode at least once permanently unlocks them as a rental/loaner car in the Arcade Modes (basic Arcade Races, Time Trials, split-screen and Custom Races), and in theory, if you've collected every single car the game has to offer, then you eventually have all the cars in the game at your disposal for use in the Arcade Modes, besides the option to use cars in your Garage.
I mean, you already have to unlock tracks in the game through progression in the campaign, so why not the cars too?
Either way, this would make sense, as it still allows people to progress to eventually unlock all the cars for use in Arcade Mode as rental cars. That way, it adds more longevity to the game, and actually encourages people to keep collecting cars to unlock them. An added advantage is that this adds more variety for those who want to play casually, or want to take a break from the campaign mode, for as long as certain cars in question have been unlocked beforehand by acquiring them in the career mode at least once.
Having seen some streams before, when offline, it's really depressing to see only a handful of cars
again like in previous games since GT5, where you don't even get to unlock any more of the cars once you've collected them.
I mean sure, you can keep using them, but they'll eventually degrade (minding the fact you'll eventually need to get through overhauling the engine and repairing the chassis), and that you'll run into the inconvenience of buying the same car again but in different colors/liveries if you want to be spoilt for choice, not to mention you have a garage limit of 1,000 cars, and buying two of out of the 424 cars in the game will result in not a lot of spaces left.
I'd like to treat my Garage cars as special custom cars that I can use as an option, and of course, more can be added by playing through the Campaign as anyone would, but I would like to have an option to try anything out of everything once I unlock them, in their original forms, without the risk of performance degradation, and the options to choose their default colors and liveries.
And that's why I ultimately find having all the cars in the game as rental/loaner cars in the Arcade Modes better than improving the AI.