Nope. PTI needs to focus on Punjab. In fact the best strategy for PTI should have been to ignore Sindh and gloss over PPP's shenigans. That is their turf- for now.
Instead focus on Punjab and turf out PMLN. With KPK already bagged and Punjab consolidated PTI would be in perfect position to hld secure rule for 5 years to carry out major reforms all the while skipping Sindh and leaving Zardari's piss pool.
Then once reforms have been carried out at 5 plus years then begin to put PPP in your cross hairs. By going after all of them PTI just forced them into a unholy alliance.
Divide and rule !