Finally got a chance to play MageGuild, and first of all I must say it is quite an awesome game. The idea of mixing and all the inherent possibilities is great fun.
I was playing the tiles version today, and thought that since there's mouse support, shouldn't it at least be used to make 'x' mode easier to navigate by allowing LMB clicks on the map? Otherwise it's kinda slow to scroll across these rather large maps. Allowing the shift key to speed up scrolling would be another possibility. Both are easy to implement.