My issue with reinforced stone is: It doesn't feel reinforced.
It comes apart like paper when you use a drill on it, and it doesn't do much to stop a nuclear explosion unless you have more than 3 layers of it (which is a lot; ~(9x9x9 - 3x3x3) = ~700 reinforced stone to cover a reactor with 3 layers. More if you want to surround it by water.)Ok, how about this then: Increase the mining time (and possibly blast resistance) of reinforced stone. For the resources that go into it, I'd rather just mine Obsidium with a Diamond Drill then use up precious iron to create blocks of re. stone.
OR
Decrease the blast strength of Nuclear explosions so that Obsidium/Re.Stone can actually bear the brunt of an explosion, and I don't end up losing all my nearby machines/life/cool building.
(These are of course suggestions, not demands :P)
Iridium Reinforced Stone suggestion. Basically everything-proof stone. That takes a REALLY LONG TIME to mine. And can be pushed by pistons so you can have a reservoir of it to have a chamber self-rebuild.