The ability to use an ally or alt as a sparring partner was something I recalled as well. Whether or not there are other effective methods for getting your combat skills up or not isn't the point, different people and play styles will always have us doing things different ways. Some, have no problem going out and fighting their way up, some aren't as strong or gifted with combat skills and need to go more slowly, still others find themselves losing more than gaining even tho they're trying. We need to have different ways to accommodate different playstyles. Someone shouldn't be left out of the combat in the game just because they can't find enough small critters to fight....and fighting small critters, btw, is a slow grind for combat as it is, if you're in an area where there are few to no critters running around, good luck.
Some, like Bejaymac, enjoy hunting revs, and it shows, others may not want to bother with them or again, not enough small ones to make it all that effective.
Bringing back a way to have a 'sparring partner' is a good idea. I like the additions Wasteland mentioned as well. Gather some materials, and craft a dummy. Maybe the quality of items gathered determines how long the dummy sticks around before being 'destroyed' or determine whether clothing could be put on the dummy for modeling purposes, etc.
I say .....bring on the dummies!! ;)