This game has a problem with charge attacks: all of them are terrible, unless you include bombs. Two in particular that stand out to me as complete garbage are the Cutter (several quick, stationary slices) and the Spur (basically a bullet). For these two, I believe I have simple solutions that will carry them up to Calibur's admittedly average but still superior charge attack capabilities.
For the Cutter: allow free movement/aiming when the charge attack is in use.
For the Spur: allow the disc to pierce an unlimited amount of enemies until it dissipates, ala the Fire Gun Puppy's line of death.
While other weapon lines come to mind as being likewise lackluster in the charge department, these two jumped out as the easiest to fix. Comments appreciated.
Yeah, I agree. Most weapons give you no reason to charge them up, since you can end up doing more damage if you spent the charge time doing normal attacks. The only time I ever use a charged attack is on a pre-fight Party Button.
And what the hell, Cutter charge. Seriously.
About your movement suggestion though: there are no charge attacks (that I know of) that let you move/turn while you're executing it, probably because the entire charge combo is counted as one attack. Easy way to fix it though: Make the combo execute faster. Right now, you're standing in place far too long, but if the flurry of strikes were sped up significantly it would reduce the liability.
No comment on Spur, never used it.