It may, but in the end, we're "paying" the price by having infinite availability over the single chance of previous games.So it's possible we'll have to use rental mons to fight the legendaries AND we won't be able to know in advance which one AND we might have to deal with bad catch rates.
Is it just me or does that sound like a massive pain in the ass? Especially if they are indeed repeatable since basically the only way you could get a specific legendary in the Ultra Wormholes was by process of elimination.
Sounds like a worthy trade off to me, expecially if (hopefully) the boss at the end is a guaranteed catch.