I cannot speak for Conitec because I am no member of them. Generally, though, it seems that the manpower Conitec has, is used solely on Gamestudio. If you would make one or more of them work on a high quality demo, this would decrease the development of Gamestudio.
That is true from one standpoint, however, this would be an awesome bug fixing area, which Conitec really needs. So far there are only people providing some fixes for some bugs, but if Conitec experienced most of them firsthand, they could fix them as soon as they ran across them. Really, it would throw production ahead, plus it would help show some of the things that alot of users complain about, and prove them to be real or not.
*Warning, personal opinion ahead*
I think it's a great idea to add new features to the engine, but I think what is already there should be tweaked before adding more stuff. There are certain features that are inefficient and turned out being released with big bugs. For instance, A6.60 still has quite a few problems in MED, WED, and some code issues.