Why does Mega Gnar have no death animation? It just defaults to Mini Gnar

"Lazy" might be a bit overly critical. I think you made an interesting point to bring that up though and although this is leading more towards the "skin concept" side of things....if Mega Gnar had a death animation, what do you imagine it would look like?

I think it's to not let Cassiopeia and her buggy death animation when wearing a skin alone :p (or shyvana who switch to old skin on minimap when she is on dragon form xD)

think about it mega gnar is when mini gnar's anger builds up how can he be angry and dead at the same time? well in leagues case he's just unconscious of course he would transform back since he can't be angry when he is out cold