common bleed manifold, nicer nosewheel tires, automatic anti-ice system (how come the brazilians figured that one out, but the canadians didn't?), and the things other people mentioned (lcd, auto-throttle)...maybe an easier starting system.

some of these things are from the erj. i've flown both. some things are better on one, some things are better on the other. i'd rather fly the crj with those additions to it, though, than fly the erj, personally. although i do miss those ram's horns.