>>57633584160 base attack would make most of the attacks slightly weaker than life orb gatr (like 5%~ish), but he would also be getting a secondary stab with really good moves (outrage, dragon claw, breaking swipe, etc) assuming the dragon subtype is real, this is why it would make more sense to just change sheer force to tough claws, if it kept sheer force then the only moves that will affect that would be breaking swipe (would only be good in doubles), and dragon rush (gatr currently doesn’t learn this and the move has low accuracy lol).
Tough claws makes the most sense as an ability to me because you’d be slightly weaker than base gatr but in return you get to keep the secondary effect of all moves, so you could use breaking swipe for the atk debuff or liquidations chance for def down.
I don’t see what else he could get offensively, if he doesn’t get sheer force, tough claws or huge power then he would need either a brand new ability (pixelate for water attacks) or an ability that just changes what it does entirely maybe a bulk focused one.