Ugh i kinda knew this would happen -
The moment Sakurai said that the 3ds version would be similar to wiiu (and vice versa)... this was bound to happenI'm sure they could have put way (way!!!) more characters but noooo the 3ds has to be ''compatible'', has to ''handle it''...
Questionable design decision for sure (yes i dare say). They artificially bottleneck the wiiu version!!!
There's hope for dlc but then again...
*I am happy that a portable version exists though (don't get me wrong)
Any cuts that have been made are much more likely to stem from lack of development time than the limitations of the platform. Nothing in the 3DS's architecture would prevent the inclusion of the cut veterans (even the Ice Climbers), but it seems likely that they were cut for time.