Well I'm not too happy about nerfs on my character but they're pretty minor and I hadn't even noticed them so I suppose it's not a big deal...
The more I play Ludwig, the better I think he is. I don't think he's deserving of nerfs, but I don't think he needs any (big) buffs. The most important thing with him is to know your moves inside and out, and how they string together. You can literally 0-death people as long as you know where your moves will knock them back based on % and character weight.
Correct me if I'm wrong, but side specials can't be B-reversed, as it's just doing the side special the other direction.
Nope, side specials can be B-reversed. You might be thinking of turnaround-B's, which is flicking the control stick the opposite direction shortly before using a special. B-reversing a side special is done by inputting forward + B then flicking the control stick in the opposite direction, and it will reverse your momentum(to a certain degree). Checked in training mode, Ludwig's side-B CAN be turnaround-B'd, B-reversed, and wavebounced.