Not gonna happen. Some things have to be hard, we can't just let players reroll their legends with no effort.
I don't really like your idea, I'm not agree to make it via pokedollars in a randomizer, or hunt poke.
First generally if u want a legendary with epic ivs its for pvp so pvp coins is a faire way to rendomize the ivs.
Second the game is not very clean, there is lot of cheater who hunt with bot, they can buy what they want on the market without any effort so its normal to not give all to these cheatters. Pvp coins is a faire price.