I'd collapse if a Real Ghostbusters Box Set came out anytime soon. RGB is my all-time favorite cartoon, but CTHV isn't in any hurry to release animated programs. If anything we'll see Exreme Ghostbusters first (as they've released Roughnecks: STC, and that lasted as long as EGB and aired at the same time).
Real Ghostbusters on DVD would be amazing. There is SO MUCH television material that I would buy on DVD, it's incredible. And very little of it is actually on the market.