I find the traffic icons to be hard to understand inately when just getting a quick look at them.
This is the one area that FltPLAN GO really has it down - each traffic target moves from a simple icon to a "bubble" that is easy to spot, color-coded to "threat" level and transparent enough to make them unobtrusive when they are in a range where they matter.
The colored darts just look like map features until you stare at them for a few seconds to decode their relationship and closing rate.
Maybe some options?
Overall, the program is clearly the best EFB at any price and I hate to nitpic - but I'd love an option SDK ! 