To the Op,
I think this thread has demonstrated that there are no "major" bugs to stop you from enjoying this module. There are some minor bugs that exist, as with every single DCS module. NONE of them have reached a state of absolute perfection, or completeness. Due to the ever evolving nature of DCS World, they never will.
Contrary to some posts here, if you check the other threads, you will see the team does address issues, both new and old with the module.
There are no "show stoppers" with the M2kC.
It's a great module!