Blenders got some problems! Big oneS!
Why do you have to discourage a possible solution to the problem? So what if it has problems? It's still an option...

/On-topic:
Blender can export to .map files, and so can another program, but I can't recall what it was called.
If you can't get it to work with a modeling program, you could also find yourself a better model.
Click here, and look at the 'models' section.
And you could always listen to face, and become an expert mapper....