Unmatched Foes? Is Claudius a poor foe for Hamlet? Why would Shakespeare not create a more savvy adversary?

Claudius is
too worried about people finding him guilty...Hamlet is a popular prince and Claudius doesn't
want to be in bad graces with Gertrude and the people of Denmark.  Had he been a more formidable
enemy, Hamlet would have been dead much earlier in the play?