But the amount of players could be too high. Just think about the number of bots. Of course not all of them would have a player who will end in the market, but still their number could be enough to have a very high impact, not only in the market, but in the game.
Draft would be completely useless, allstars and perennials stars useless as well if you are trying to sell them... And I'm not sure it will end with the 4-5M transfers of the best prospects, but affect the players who currently are being sold at more or less fair prices.
Unless the requirements are high enough to limit the number of players accordingly, or from my point of view it will kill the rookie market.
From my point of view: It will put an onus on training of rookies. It will sort out those that are homegrown, those that stay their nation, those that don't etc. But, it will put more of an emphasis to everyone on training players, as now even allstar and pa players in TL that could be decently worth it to train, end up in bid wars, potentially going out of range for newer managers, managers with less cahsh flow, managers who haven't yet grasped the economic simulation of this game yet.
With this oversaturation of the market sure it will kill prices of rookies for selling... but all that means from a different angle is it makes selling TRAINED players more lucrative and more beneficial, as now anyone can get a prospect, but the well trained vs poorly trained players separate themselves from the pack more and more. From my perspective more players being trained is a good thing for BB and the BB economy. I understand why the selling of rookies is so lucrative, but if you look at real professional sports, its not the brand new rookies that have the most value for sale or trade etc. That's why draft picks especially in the 1st round are so coveted by every professional sport. Nobody would sell their first round draft pick for a handful of cash just because they can. Where the $ gets spent most are on that batch of people coming off of their rookie contracts, hitting the market for the first time (unless they re-sign) and they have played for a bit, trained, and been brought up to speed more so on the level of competition for which they play. That's where the most $ gets spent and where players should/do cost the most to buy and get most to sell/trade, etc.