>>44764021I like the Factory but
>bringing up YT guides for battling>but don't bring up YT guides that speed up mon catching (without hacking) tenfoldI get the argument that Factory's more convenient for instant battling but you're being disingenuous. RNG abuse makes it so anyone's able to get a battle ready team in less than a few hours. Catch a 6IV Ditto with that and hatch a perfect mon, only worrying about egg moves, or catch a mon outright with everything you want if that's not important.
In Platinum there's not really a good way to go about investment afterwards, admittedly if I remember right, but HGSS makes it a lot simpler and even has repurchasable PP Ups through Pokeathlon. Gen IV's honestly one of the few gens where getting the right mon is little issue, even V has a lot of missable things like HAs and VI onwards sacrifices manipulating what you want for raw better odds.