I have never said I wish my B3300 had more HP. Even with the BH on the tractor and the bucket full of dirt, in 4X4 low range the tractor will spin all 4 until it just digs itself into the ground if whatever I'm trying to pull or push won't give way.
Only thing I could see would be for more PTO power but even then, any implements that require more than the rated 27 PTO HP (according to the owner's manual), would really need a larger frame tractor anyway.
But this is just my worthless opinion, YMV.