I wish people cranked out more turn-based tactical squad games on the Silent Storm engine.
Well, you got Homm5. Though it doesn't count because of lack of physics.
I had a dream of making a fallout-themed mod for SS, unfortunately it all ended prematurely when I wasn't able to appease the machine spirit to run the bloody editor thing.
Technically, it had all the assets, I would probably be able to use the disfigured guy from Hammer and Sickle as a makeshift ghoul.
I really loved the engine myself, I mean, individual bullet holes? Being able to bring down a building with meticulous application of 7.62 ammo (and tons of it)?
Not to mention these moments when you would shoot a guy on a catwalk which leave him hanging from the siderail.
Other than that, I think there were several reasons why the engine didn't see much use at the time (Discouting the obvious: lawl an engien focusing on turn based? Here have a cookie), for one it was a resource hog, forcing the devs to cut e.g. on map size.
I remember the maps in SS1 were pretty claustrophobic. They got better in SS2, but weren't impressively big nonetheless. The AI really, really took its sweet time on its turn. Yeah, the physics was awesome, but demolishing a house really took a with the engine crunching them numbers like mad.
While most of these issues are related to computing power and would not really apply right now, well that was then, back in the 2004.
I think the fact that you had to perform genuine magic (including obtaining the specific version of MySQL) to run the MapEdit tool was one of the factors that prevented it from being popular.