Preferences for play and app

We are a group working on a tablet application that should provide a map for pathfinder games, and would like your feedback to decide what functionality it should have and what defaults will be in place. So far the goal of the app is to provide players with a map that portrays what their character can see and the GM with a simple way to draw the area for encounters and dungeons. The intended use is as a tool during normal play, only replacing a battle map.
This survey is to scope the project on what defaults we want to use, and what priority the different options are regarding implementation.
Your response is appreciated and the survey is anonymous.
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