New firmware is here and I gave it a name VanillaExperience. It is based on latest Newman K19 firmware released on 19/03/14. Everything is working like a charm, only one bug is present, when enter camera change aspect ratio to 4:3 and set right resolution, after that you can return to 16:9 ratio (full screen)
Also incorporating root rights was braking something, and thus root is not achieved right after install, but Framaroot is incorporated and just choose "Barahir" option.
Full developers options are there, just enable them by tapping 6 times on to "Build number".
Firmware is clean JellyBean Android (Vanilla), even launcher is basic Trabuchet. Since some XDA members reported higher battery drain due to LED fix, I left factory default without changes.
What to tell you more, try it and your comments or suggestions are welcome.
Download: THL W200s VanillaExperience