I think one of my biggest gripes with the Pokemon series.

I'm not even talking about this from a "gender norms" angle, I'm just mad that every time I want a shiny Gallade (a Pokemon I like infinitely more than Gardevoir), I either have to find a way to hunt him specifically, or catch a shiny Ralts and pray to God I won the coin flip (of which I have lost multiple times before).

It's worse because it feels a lot less justified than others. Combee makes sense to only evolve into Vespiquen if female because only female bees become queen bees. With Gallade, you already have the criteria, just make it so that a Ralts only evolves into a Gallade with a Dawn Stone.