>>14381213More cont.
But finally, please take notice of which pokemon got their megas:
>Gengar/Blaziken/Lucario - upper tier of most frequently used pokemon in the competitive battles, usually with already large fandoms that liked them regardless of their battle provess
>Gardevoir/Mawile/Ampharos/CHARIZARD/etc: - popular pokemon that for a very long time were most frequent guests at improvement wishlists across the internet.
>Kanto starters: -to honour the recognizable progenitors that made the first game what it was to become.
As you can see, Gallade fits nowhere in that list:
-average popularity
-somewhat decent in a way that called for no immediate tweaks, yet enough shitty to be disregarded by wider usage platform
-meant as a bonus to capitalize on established popularity, rather than being a focus of one.
Probably GF felt that Gallade at his beginnings was a separate placeholder for something powerful amongst Ralts. Now that we have megas, Gallade no longer fills that purpose.