First of all WOW you guys have really nailed it wit this! Our group has been using and trying to find better VTT software for playing Pathfinder and D&D 4e for about 4 years now. . . We tried every thing. Used Fantasy grounds for a little while until it got boo buggy/ unable to connect game sessions with stability. Then we used I-table top for a while. IT is stable but the UI is not very intuitive but at least we were able to play.
Roll20 is really nice and you guys have made great progress in the last 6 mos since I first tried it. I will be using it to launch a Pathfinder Society Session soon, and will be sure to splash the donation pot for you guys Keep up the AWESOME Work. It is the best thing out there right now.
On to my suggestion. The align to grid feature is really slick allow us to get our maps to near perfect scale with the grid. One thing I would like to see added is the ability to select the grid size like you do now by dragging on the battle map but also would like to see the option to fine tune that with pixel size info.
So once you drag it and see that the size is 72x76 pixels and then you see the horizontal is a little off I would be nice to be able to change it to 75 pixels or 74 to fine tune the fit.
Thanks and again keep up the great work! I wish you guys the greatest success.