We've thought about it. To answer @Sestito'sHandMadeVodka's question, we're considering following the IRL CBA's guidelines for getting teams under cap.
On the complimentary buyout - if you take a look at a team like Carolina as an example, who's ~18m over cap, one buyout doesn't do much for them. Best case scenario is they buyout Subban, which brings them down to ~9m over cap, but are still forced to trade away their players, presumably to other teams who have bought out their own Mike Richards or Alex Petrovics. For relative peanuts.
Again, these are all options we're looking at. It's been heavily discussed within the commissioner team and we felt it was time to ask the league.