I played a lot of Mage Wars a few years back and I have Academy coming this Chistmas. I measured a promising looking box wrapped under the tree and it is inch perfect.
I actually quite enjoy a rather more restricted card set. Perhaps a bit more than core set Academy, but not TOO many cards. Mage Wars with all the expansions can have a little TOO much going on. Particularly so if we are trying to gain new players.
There's an on line game called Pox Nora that is very much like Mage Wars, but after twenty or so expansions, it can't get new players as it's all way too complex. The best period was after four to five expansions.
Domination, Academy, and new play MODES seem more interesting to me, rather than tonnes of new cards.