There are devices emulators out there, Adobe provides them, eclipse provides some (mostly nokia) and I KNOW that Visual Studio provides most of the mainstream smart phones in the Smart-Devices emulator... however I do not know if running a Java app in a VS environment is possible... though Microsoft has recently loosen their grip on their products and dropped some of their guard with letting other applications utilize their studios.
I have to admit as fun as this would be to see... the sad truth is if we make it for one phone, we'll have everyone with their own phones and sub-OSs asking for a version on their blackberry or iPhone, etc.
I just honestly think any developer that takes this on will find themselves further in-over their head then they initially thought.
However, if there were some developers outside Titan (or those inside that have the time to dedicate to it) feel they are capable of creating such an application we'll do whatever we can to help. However you will have to ask us (Me, since I'm instigating this) to please ask us in PMs or Google-Talk, and we'll let you know what we can provide.
Might even setup a Titan Code page on GoogleCode to have a central hub for said projects.... or something... though as with any 3rd party tool, use at your own discretion, lol.