IMO it would serve the common person well if we changed the way the law works so that if a corporation sues you for a laundry list of things, if a single claim gets thrown out, then they all do. That prevents this insane pile-on where a half-afternoon's work by 4 people in their giant legal department turns into a multi-year nightmare for an average citizen. I think that would be a fair way to reign in the corporate "throw everything at the wall, see what sticks, or at least hope we intimidate this regular Joe into submission" approach that's all too common today.
While I agree with sentiment, I don't agree with the premise or the method. Corporations aren't the only ones stacking charges. Prosecutors and private citizens (usually operating pro se) are just as capable of frivolous litigation. The best action a judge can and should take is to dismiss the meritless claims before proceed to court phase.
Generally no. The reason you see a 12 claim filing is because they don't get unlimited do overs. You get some chances to amend the complaint, but once it starts moving forward, that's it.
That also happens when county prosecutors are up for re-election. Stack charges in case the jury finds one claim weak, there are 5 synonyms for the same underlying crime that the jury is willing to convict on. Also helps with forcing plea bargains.