I kind of feel the same, but I'm going to use the time I have to play in the open beta to try and play some of the other chars I haven't explored as much to see if there is anything I am missing.
For example, I found something pretty interesting last night with Conquerer. It seems you (purposely?) cannot tech guard breaks while charging your heavy attack. However, if you double tap guard break when they go for one, you will escape it. It probably has to do with being able to cancel the charging heavy into guard break, and guard break startup allows for an additional input to escape them. I am not sure how good charging the flail is. It does seem to do a shitload of chip damage against assassins and vanguards if they block which is cool. However, it seems you still can't get his charged heavy as a followup to a parry, which seems odd.
He does seem interesting though and I will probably put some more time in him. After that I'll probably see what all the fuss is about with Nobushi.