Another good idea.
While polearms have somewhat decent alternate mode and onehanders have solid alternate 2h mode, most twohanded weapons have shitty alternate mode.
I really don't see why, for example, longsword (HBS or bastardsword) don't have same stats in 1h mode like arabian cavalry sword (knightly arming sword).
Also, onehanded weapons which don't have alternate mode should get it. Every onehanded sword or mace can be used twohanded. No reason to insist on such high specialization.