Personally, one of the downsides of the original RPi (and RPi 2 as well), was it's , believe it or not, size.
Sometimes I wanted to have some portable embedded projects, for which small micro-controller would not be enough, but RPi, was 10 times bigger.
But it's just my personal nitpick, overall RPi devices, community and it's ecosystem is just great.
Personally, one of the downsides of the original RPi (and RPi 2 as well), was it's , believe it or not, size.
Sometimes I wanted to have some portable embedded projects, for which small micro-controller would not be enough, but RPi, was 10 times bigger.
But it's just my personal nitpick, overall RPi devices, community and it's ecosystem is just great.