Enable Lua loadstring() for debugging
Ability to run Lua code in runtime would allow to develop advanced debugging features like remote Lua shell.
For example you can make remote level loading or editing much easer. And debug platform specific errors much quicker.
This can be implemented in ZeroBrane Studio IDE.
It's even possible to make integrated code editor like Codea.
loadstring() can be turned off for iOS builds with App Store Distribution provisioning profiles for Apple compliance.
This is available starting in 2015.2582
Supporting the Watch feature in on-device debugging would be really worthwhile.