ktay95 on 08 November 2014
Firstly its Grezzo making it so no more than 50 people (wiki has them at 46).
Secondly they had 2 smaller projects between OoT and MM, so the whole studio hasnt been on it since OoT.
Thirdly they are trying to make it more accessable to new players so they may have fixed some issues that others have mentioned which can take some time.
Forth, porting from N64>3DS isnt like GCN>WiiU.
Fifth, the expansion pack was required on N64 version which may have lead to some issues when using the OoT 3D port as their base for MM3D.
Anyway those are my reasonings
