That would mean the races have to be longer so you can spend 1 or 2 laps preparing to pass each opponent car.
Or simply start at front and drive away with no competition as if it was time trials with a few roadblocks to lap later.
I think this is precisely why many people miss having qualifying sessions in GT7. My ideal scenario would be a small field of maybe 3 to 10 cars, with Sophy adjusted to the player's skill level, and the player would be able to set qualifying laps to determine their starting position, then have a closely fought race spanning maybe 15 minutes, with no rubber band or the collision resistance of the regular AI.
I like the idea of older cars only being available used. It’s quintessential Gran Turismo.
I think the used car dealer in GT7 is missing something though, compared to previous games. Like the dozens of variants of the same car that there used to be. I kinda miss that.
The problem with the UCD (and LCD) in GT7 is that they exist solely as an inconvenience to the player, instead of serving them.
Back in GT1 and GT2, new cars from the dealerships were prohibitively expensive, and so players are almost forced to shop for used cars in the early to mid game. GT1 and GT2 were notorious for including many trims and specs of a given model, but I think they give the UCDs their soul and purpose, as it turns the UCDs into a bargain hunt. Why bother with an expensive, shiny new A80 Supra RZ from the New Car Dealer when
a used A70 Supra Turbo can be bought for starter money, and can
beat the majority of the game's events? (Warning for bad language in linked videos) When you find a bargain car in the right colour and the right trim in the UCD and used that money you saved for upgrading it,
you found it.
You made it work. It's this sense of freedom that GT7 has entirely robbed players.
In GT7 however, the poor excuse for a campaign hand holds players and deprives them of making their own meaningful decisions, with relevant cars often being gifted to players, meaning that players rarely even have to buy their own cars to progress through the main campaign. That completely invalidates the bargain hunting, choose your own path purpose that the UCD served in the past. Not to mention, with the economy of GT7 being so lopsided, there is absolutely no meaning in saving 30k Credits buying a used FD RX-7 as opposed to buying it new with a fresh odometer, because I can earn 750k with just half an hour of driving.
As ikon has pointed out earlier, the UCD in GT7 could've been given its own character with used cars being sold with aftermarket parts, body kits, or even liveries. I can imagine PD staff browsing through the Discover section and choosing one publicly shared Style to put on a used car. But PD chose to do absolutely nothing with it. Aside from the 3 starter cars, everything in the UCD and LCD are in excellent mechanical condition, completely bone stock, just with artificial distance on their odometers (which I, among many others from what I can gather, find extremely irritating). The cars have no meaning nor character. They're just old cars. From a gameplay perspective, Brand Central cars are not only readily available, often cheaper, can be bought in any stock colour, and have a wide performance range. Unless a player already has an established interest and knowledge in the UCD and LCD cars, the game gives players zero reason to bother with the UCD or LCD. And it's game design I find baffling. Why would I want to spend over 200k on an E30 M3 SE when a GR86 can do what it does, but for much cheaper? Is PD trying to make me dislike old cars?
The UCD and LCD is, as far as I can tell, just there to inspire FOMO feelings in the player. And it sucks.