i know we all meme about giving tail glow to ampharos but there's definitely quite a few ways you could go about buffing it. as of right now, ampharos is just too outdated to function as a bulky, slow electric type; for one, it simply doesn't have the raw bulk to function in this role, so that could be improved greatly(already got +10 def in gen6 but that's not enough) to help it fulfill its role better, or maybe some stronger support moves to fit its theming as a helpful lighthouse attendant. alternatively, you could buff it to be able to at least somewhat stand up against ground types to make it even more unique compared other electrics. getting ice punch in gen9 was a step in the right direction, but off its paltry 75 attack was just too little, too late, so either an attack buff or some sort of unique ability that helps it stand up to ground types would be a huge help(maybe a light themed version of no guard or something to hit a lot of ground-types secondary type with focus blast, idk).
of course, getting mega amph back in za is gonna be a huge boon(especially with 95 attack to use its new ice punch) but having dragon pulse as its strongest dragon stab really hurt even in its debut gen. i don't think draco meteor really fits it design-wise but idk what else you could give it without making up a new dragon special move, or maybe take dragon energy from regidrago(balanced because of its 45 speed)