Agreed. The only reason to purge a cigars is if it starts tasting nasty.
As far as keeping the wrapper lit--touch it up more often, and employ a double-puff ... Take a nice draw, and then a few seconds later (when the wrapper gets going) take another. I use this any cigars that has a thick wrapper (LPs ... Most broadleaf sticks actually). It works well for controlling burn and gets you more flavor out of the wrapper.
