I posted a plan towards getting from Early Access to a more feature complete releasable state - such as getting the liquids, door system and other systems in place. See http://steamcommunity.com/games/598180/announcements/detail/666939419452937838 for the list of planned builds.
However people are having more issues than expected so the initial goal is to work on stability, UI polish, documentation, tutorials and missing features. To that end, please post your bugs and issues on the forums or Arcane Mapper Discussion area here on Steam. Performance should improve dramatically with the next release and the Web Search system will be in place, making finding free assets for your games much easier (for personal use, not commercial obviously).
I want to stress, as I inadequately expressed previously, that this is Early Access release - if you want a polished or complete tool Arcane Mapper isn't there yet. In that case it may be best to wait for a few builds before diving in, unless you want to show your support early of course.
For everyone that has purchased the product so far, thank you. You will help shape Arcane Mapper into the high quality, useful and complete tool you need to enhance your games.