Nothing that couldnt be reworked.
How to draw the map and playing the game at the same time? In DS/3DS, you have to use 2 screens to do that, with Switch, the best choice is completely drop the drawing map feature on second screen. In other words, only auto map
No, a better solution could be found.The problem with that, is that the whole map drawing system would need to be reworked.And while Atlus already said that they will get on to it eventually, it was probably deemed not worth the trouble for Persona Q2.
A shame.I mean, the game could still be ported eventually, but thats years from now.