Oilers seal of approval if they don't like the trade. If the Panthers are in on this trade, it'll be extra nice.
If Flames need to sweeten the deal... what about someone like Dube? Not even joking, some Flames fans considered him Bennett 2.0 for a bit when he was doing slightly better than Bennett on the same line as him. Dube is something in between Heineman (the prospect you traded us) and Bennett lite. Bennett doesn't seem to do as well on wing (better at C), Dube is OK playing all 3 positions, but due to Flames depth usually ends up as a swing wing.
In all honesty, what Zito has done for the Panthers is great. It also kinda eats away at me that the blueprint of what you guys have right now basically looks like a superior version of what it seems like Treliving/Burke drafted up years ago, but basically had to attempt to do as a rebuild on the fly.