Something I've found very useful as a DM are encounter tracking tools.
Some examples of what I'm talking about can be found at orcpub http://www.orcpub.com/dungeons-and-drag ... at-tracker and in the Gamemaster 5th edition App on iOS https://itunes.apple.com/us/app/game-ma ... 76026?mt=8.
Both these tools have access to the 5e bestiary and spells, and allow you to track turn order and health of each NPC/PC. It's allows me to focus my attention much more quickly on the combat to keep it moving, rather than digging around books to learn the details of each spell I'm unfamiliar with/keeping track of health. I don't care much about the virtual dice rolling, as I find that to be much more fun to do physically, but the ability to track encounters within InfinitasDM would, in my opinion, be a fantastic addition.