Glad you like Death Road!
As for Rumble... I could probably release it now with a few tweaks. The combat is solid and I probably won't do much else with it besides a few frame-timing refinements. However, the game overall is not where I want it to be, doesn't have the new features and modes that I wanted to add yet. And other enhancements to differentiate it further from EGGNOGG+. So until I get those in, I won't release it... though I may to an alpha build for playtesting combat.