So...
...instead of balancing out the existing game mechanics, some of which have been problems since Base Set, we tack on a new gimmick that is inspired by the new video game gimmick... but which is a lot harder to track in the TCG. Listen, I'm not in charge of the game but if y'all don't start demanding better, we ain't getting it. ¬_¬ Okay, so my concerns about pacing the game properly so we can finally balance out the Stages of Evolution, get first turn attacks* back (because the game was better when set up attacks had time to work), etc. are only tangentially related to Pokémon-GX, I'll leave it at that.
So really looking at Pokémon-GX, how are we supposed to easily track whether or not a player used one of those attacks during a game? Originally Supporters required they be put into play and then discarded at the end of your turn to help remind you; it was difficult for some to adjust to the modern approach (just remember!) but remembering for a single turn that you used a Supporter for the turn is not like remembering whether or not you used a particular attack.
There are so many video game mechanics that have yet to get a TCG counterpart, but in some cases that is just fine because a 2-player TCG =/= 1 or 2 player video game experience. Still that just screams gimmick and... well most TCG gimmicks are either fleeting, problematic, or both. We'll see if they can get this one working well. The fact that the name is different should raise some concern; we lost the much better system of "Poké-Powers" and "Poké-Bodies" because the video games finally added in a mechanic similar to them, but called it "Abilities". Why wouldn't they want these to match up?
*I don't want donks back; the problem isn't attacking first turn it is that the designers keep giving us attacks that can score a KO first turn, instead of not designing cards capable of doing that and letting the old stuff rotate out. Of course Expanded still makes that a problem, but if the sooner the-powers-that-be deal with this, the sooner even Expanded play can be remedied.