I think the ones on ESF atm are great, but it might be good to have a change for the beams you don't like. So if you don't like the gallic gun sprites, then download one that you do like. I do it all the time for Models and maps.
Lol! He wants everything perfect >_<. Hahahaha. Well to be blunt, it takes a little longer to make a perfect animation of a beam/wave. Ask the ESF Team. But if your intrested in perfecting it, go for it. You just need the program and a good knowledge on animating etc. Anyways. There's no can do in fixing that "imperfect" animation unless you do it yourself.
Notice the aura-like sprite coming out from the tale? something like that. THAT's what Paul meant. And no, it doesn't have to be perfect. It just needs to be better, simply to rise up the game's secks-appeal D: