(Sorry, we've just this week updated from 1.6 to 1.8, so all this feedback is probably way late. Apologies!)
It's interesting that this new webadmin optimizes for multi-line input rather than single-line ones. Did you guys consider going more of a Facebook style, where enter still submits by default, but shift+enter adds a newline?
Alternately, if you want to stick to optimizing for multi-line input, will you guys consider supporting cmd+enter too? Ctrl+enter is really cumbersome on Macs. =)
Thanks for the consideration!
Aseem