Dungeon Architect

  1. yes. its very easy to place a randomized location actor and actor type even. best example is the nature example project spawning trees. it uses the spawn rule, and transform rules.
  2. yes. as long as sound is actor based or zone based. very easy to setup.
  3. as you like. you can make whole rooms with some randomization to it in snap builder. or use grid to build rooms from components.
  4. you will. It is possible, however DA obviously wont do it as it is out of its scope. However if you use snap build and pre-build rooms you can use ue4 build in mesh merging tools. snap builder also have a nice level streaming functionality, that allows to load and unload rooms on the go, to even more out performance.