i just noticed something funny
on the E3 trailer 2014 (almost 1 year old) you can see 4!! of the later relased 5!! maps. So 4 maps where already finished at e4 2014. On 0:57 you can even see a map thats at the moment not in the game.
This have to say that nintendio probl already made bunch of more maps.
Unfortunaly the Review scores are already influenced by the only 5 maps launch content. I gues nintendo could easily released 15+ maps (the maps are maybe even already on disc). So they decided to dont do that for some reasons.







