Top lawyers handle improper joinder by moving quickly and pragmatically: they start with an early audit of the complaint to confirm the misjoinder, map each claim to the controlling facts and jurisdictional rules, and attempt a meet-and-confer to narrow or amend pleadings before court intervention; if that fails they file focused motions to sever, dismiss, remand, or strike with strong precedent and a clear showing of prejudice, while simultaneously asking the court for case-management relief (bifurcation, limited discovery, protective orders) to avoid undue burden, preserve the record for appeal, and tailor discovery to the remaining issues; throughout they keep clients informed about cost/benefit tradeoffs, consider strategic settlement or stipulations where efficient, and always adapt tactics to local rules and precedent so the remedy minimizes delay and protects the client’s substantive rights.