it is not that difficult (little programmer skills required) to create some buttons or a new menu in Jivelite. You may have a look at the “Kodi Control” Addon that I created to start / stop Kodi on the device. You should have a look at the files in the Jivelite applets folder:
To create a new menu for your FHEM control, you should start with copying an existing applet, rename it and start playing… There is some documentation on LUA development on other websites.
One thing you might also be interested in is coming within next weeks: voice control via Siri or Google Now. With a Z-Wave-Server running on Max2Play you can also control FHEM via HTTP-Calls with Apples Siri.