Having been here from GT1 in 98 as well, I got to say that the most fun online experience for me has been GT6, with great themed weeklies, open tuning options, and fixed tuning, curated options making people have a low stake, relaxed experience to per example, pick the Tesla "🤮" Roadster on an entry sportscar themed race.
The TT's and Weeklies utilized way more the tracklist, and felt curated, although you could still fill some repetitive car choices, it was leagues ahead.
I do see why they stick to the Gr.3/4 choice, as that's what is mostly wanted, in any racing game. Even if the game lets you curate some great experiences w/ historic machinery, most people picking up and play want that comfort, tried and test leveled playing field.
And us here, is a Gran Turismo Forum, are not the majority of the playerbase.
By us being in a forum, something that is completely dying all around the internet (and glad GTP still has that classic forum feel

), we're already dating ourselves, and showing we're a fringe of the target playerbase, being highly dedicated, and possibly also quite nostalgic.
What we have at the moment isn't bad at all. I believe it is the best pick up and compete experience in the market at the moment.
Picture yourself as either someone competitive, or casual, and in GT7:
You can turn on the game, go to the Sport tab, and you have a combo that you can enter quickly, where you know it will be leveled, as most possible as it under the BOP, racing people your level, and easily repeatable? You do not need to do some wizardry or pray to some moon deity to get the tyre pressure, or weird concepts like LSD Preloads or whatever those weird faux-engineers keep babbling about.
You show up, race, pick up places, compete and have fun. Rinse and repeat
On what we have right now, Daily A, the less serious on competition, while giving some fun combos from time to time, should be way more curated and offer more opening tuning, once a month as already proposed above, would already bridge the gap to that part of the playerbase that craves more freedom and a higher usage of the car roster.
Make it so we have to pick those CUV's added of late, tune the suspension or something, and have a crack at them this month, and on the next month, its American Classic Muscle tuning theme, on week of the month.
Daily A is the golden goose that could, but you find out that it's just a chicken that mostly puts out spoiled eggs.