Great tool! Why DCS doesn't have a built in flight planning tool (that's usable in MP), I'll never know.
I'll weight that I'd love to see the ability to draw threat circles, but it's probably only worthwhile if they are saveable between sessions. Falcon BMS allows something similar, and I've always found it to be pretty handy.
For that matter, I'd love to see premade waypoints for all the airports, as well as the ability to save additional custom points, so that you can precisely mark and recall airfields, INS update points, and the location of improvised fields. But even if you don't add another thing, I'm very grateful for this tool.