Rengar's old Q on pbe looks really bad on mecha rengar skin (imo)

I don't know if someone noticed, but the mecha rengar has like 2 weapons, on left arm he has a slicey something, and on his right arm he has something like sword. This skin was made especially for rengar's Q that he has from start of season 7, but the other skins were made for the old Q that is now coming back. The problem is, that the returning Q animation looks really bad. Other skins have like daggers to stab the enemy, but this is especially for horizontal attack (his aa animation) and Q animation. I would like to get that sword thingy on his right arm re-done to look like dagger, because this new animation feels really underwhelming and you won't get the stab feeling liek you do with nighthunter skin for example. The reason im saying this is because i like the mecha much more than nighthunter (i have it on second acc where im not playing anymore since i play on the other server) but this Q animation for mecha is really underwhelimg for me.