A trap with 2 separate effects, how fun! Both curses have their own downsides too.

Being a Micro, you only take up a small portion of a tile. It could take you minutes to get to the other edge of one. Not to mention what happens when another pokemon wonders on by. They likely wont even notice you as they step right on top of you. At least your belly isn't as big to compensate, oh your items were shrunk as well and there is no way you can carry one of the big (normal) apples that are lying around.

Macro on the other hand, you take up so much more space than before (1x1 to 3x3 to 5x5). More space that you can use to step on traps you would have missed before. Then you also have to fit in those 1 tile wide hallways! Oooh, imagine stepping on a Treat and Box Trap... such a big body being fit into such a small box...