Actually, I think it does. There's no use in getting both Enhanced Basics and Ground Smash, and Iron Will actually gets used in third job. I'd also get Enhanced Basics, but only because we're talking about a Spearman.
And Hyper Body is only level 20 now, so the skills do add up =)
I wouldn't exactly call it a nerf; you could just Rombots grind (I was going for a level every 2 pqs...on a Wind Archer who was just leecing experience. We won every round though, but most of the experience comes from killing the Rombots). However, I don't know how many jerks are there now with Mechanic (people like to try to solo), or if you can even find an empty channel now (you'd be looking for room 3 or 4). I'm just lucky I'm from Australia, so there aren't as many people to deal with.
Try it out and see how it goes. It take a while to find a channel, but if things go smoothly then on (if someone leaves, the other team should just go in and hold a room), you'd be levelling like crazy. It's almost as fast as levelling when you were level 10, maybe faster depending on killing and summoning speed.