My 'initial' thoughts (and some 'minor' issues that maybe Vic can help out on):
Played the TIST tutorial. It was just enough to get your 'feet' wet, which is what a tutorial does. Then I went to KPHL at 1400. As posted by jmesty, I wish there was a way to adjust traffic. I had planes popping up left and right. I did have to delete one plane (Denali 1161) as he wasn't moving, and was one of the first planes to call for taxi. The others taxied just fine, and no, there wasn't any other 'planes' in his way.
I saw no way to 'assign' taxiways. I may have to experiment with this (maybe insert the taxiway letter in the command line??). For that to happen, I will need to print out the taxiway diagram. EDIT: I found that you can right-click on the taxiway(s) on the ADIRS to choose the routing. Right-click again to 'deselect' that routing. The routing assignment goes up in the command line so you can see, especially if you have the airport diagram in front of you. I found this on accident, but works great.
Looks like multi-monitor support is non-existent. Would be nice to move the radars and app/dep list over to the other monitor.
Graphics are excellent (and I'm not going to be 'picky' about red beacon on tail, either). Haven't played with any weather yet so can't comment.
Thoughts on some of these, Vic? All in all, I think it is a great product, especially for $30. This is MY opinion. Some may be disappointed but for me, this will give me hours and hours of fun (but sure would like multi-monitor support).
Rob