Hopped into training for a bit to try out Byte & Barq (I rather like the nickname somebody else gave him in one of the earlier threads: Air B&B) and Kid Cobra. I don't have the hang for Kid Cobra at all, although it was good practice to test him against the punch/grab training stages since his uncharged sidestep is so painfully slow. The Ribbon Girl, Min Min, and Ninjara training stages (advanced punching, punch defence, and grab defence, respectively) are all a good workout for any new setup.
Compared to my performance the Testpunch, I've been surprised so far as just how much that single exhibition match with Zerk and Mr. Yabuki changed my approach: much less jumping, a lot more agile side-stepping, and usually holding a glove in reserve for defence. I'm playing more defensively overall, and yes, I managed to pull off the trampoline combo on Spring Man's stage.
My ambition from the start was to clear Grand Prix 4 with the entire roster before proceeding to the ranked multiplayer. I've cleared it once so far (with my Testpunch main-main, Min Min) and found it pretty well tuned to my skill level: dropped a few rounds here and there but didn't have too much trouble so long as I stayed precise and light on my feet. In single-player it matters to observe your opponent's arms and counter-pick accordingly (whereas if I recall, this information is masked against other playersyou don't see their final selection until you lock in). And at this rank the CPU will block every rush if it is in position to block, which taught me to find and exploit the openings more consistently.
Hedlok required three attempts, as I choked on the first two best-of-threes with only one or two hits to go; got too impatient with trying to take him down even though there isn't a timer like there is against Hedlok in Party Mode. He's tuned quite a bit differently in single-player (at Rank 4, anyway): hardly any grabs, and the six arms don't make much of an impact besides amplifying his damage output. Poking with Min Min's Dragon beam did most of the work for me.
This was all with motion controls, from start to finish my preferred way to play. Haven't obtained any arms yet beyond the default set, but I'll probably have to by the time I get to characters like Helix where the default loadout may be a little too special-purpose to get me through a Grand Prix level that is pushing me already.