Gangrene with Bike Envy

I've mentioned before, I'm quite contented with the bike stable I have, and very rarely do I look at another bike with any sort of want. Likely because I have so many projects going on in my garage, I can rebuild an old bike frame each year with different parts and feel like I'm getting a new bike. But these 650Bs have me intrigued. I love my 29er SS. I love(d) my geared full suspension. I love(d) my 26" hardtail SS. Methinks I need a geared hardtail 650B now to complete the gaps currently on the pegs on the wall of the garage.