Iv'e installed and tried out the mod, i loved it! However, you could do some work to help it blend in to the original game.

It won't lag, I have tested it with 40+ scorpions firing at the same time, and also in multiplayer matches. The gifs shown above are taken directly from the SLP file, so that's exactly how they will show in game(if you looked close enough). Feel free to subscribe and if they are not to your liking, with the new mod system, you can just unsubscribe and the original animations will be back again.

Awesome, but won´t it lag when there is a big number of them firing at the same time? or is just an animation "reskin"?

I like scorpions a lot.