Suggestion to implement in roll20. How about doing a layer in a sublayer? I mean, a matrix layer (to implement buildings with several floors). Example: Inns, taverns, dungeons, etc... Currently there are 4 layers (map, token, gm and dynamic) The idea would be, that there would be an extra button, apart, where to configure levels (ex: 1, 2, 3. 4. .... etc...) in that button would go the different levels in height.... (and then each level with their respective 4 layers "map, token, gm and dinamic"). Changing the level has its own 4 different layers. Let's say that each level would be a layer, with 4 sub-layers. What is achieved with this? Simple, implement mapping at different heights, not having to change pages.