Than everybody who wants can create addons for several kind of devices and other software. Right now the API is still very tiny and in my opinion it should stay like that. Only a very small selection of additional features will come.
So far our capacity (only 2 devs) is very very limited to support all kind of other software / devices in short time. (We're still students and doing timeup as a small side project - We saw the need of that tool when trying to organize meetings for learning groups)
Any other idea how to further support your idea?