Luke is gone (sadly), but, absolutely, Pav should play on, especially if we can snag McCarthy or another proven KPF.
Pav leads the club in goal assists, and I reckon that — with all due respect to Walters and Ballas — he can crumb like no other in our forward line. The problem this year hasn't been with Pav, but with our I50 strategy. Bombing it in to the top of the goal square hasn't been Pav's preferred method of delivery for years — especially not when he's being double-teamed. He loves to receive a chest mark on the lead, but our entire attack is built around forcing a stoppage inside 50, because we're the best stoppage team in the comp. It makes sense, as a strategy, but it hardly plays to Pav's strengths.
Maybe it's because he's been hurting and not able to make those leads, I dunno. But if he's got another genuine KPF with him, both to halve the load and to allow him more opportunity to lead (not to mention time in the middle, or leading up the wing), he's still got a hell of a lot to give this club.