I don't see ICON going below 30 unless something unexpected happens. Looking at the skyline renders made elsewhere, a 30 story tower doesn't seem out of place.
50 stories is hard to imagine, but at the same time it is "only" 15 more than the NBTel tower, so it probably wouldn't be too out of place on the skyline, especially with the other projects going up.
It's going to be an interesting year in Moncton in any case. Wish Freddy would see some more activity; we need it and we've got some prime spots downtown waiting for development.