his animation is great, but why never make longer duration i wonder?
Nagoo focuses on quality rather than duration, It's rare to see long animations ( 5-10 minutes?) with even similar animation quality (boob jiggle and touch interactions) to Nagoo, and it would probably take him so long that it would burn him out, as I got the impression he is not keen on compromising on quality.
Said this, his last Juno animation was almost 3 minutes long, and he often does 2-3 minutes animations, which I would not consider short by any means.
This last Night Elf animation was announced as a short loop from the start, probably a palate cleanser during his longer Yuffie animation, which I think he is still working on.