Thanks for the comment - glad you've been having a good time!
- Mortars: This is by design. The mortars are probably the strongest weapon in the game, so they need some downsides. We want them to be stupid but predictable. Also, players are rewarded for figuring out they should stagger them, or build forward turrets to kill trickles.
- Bridges: We could maybe do this. Is it so that you can have two separate loops with roads that crossover but don't connect? Lava bridges we probably won't do. It's nice to have an obstacle that you can span with pylons but not roads.
- Bug navigation: This is partially a technical limitation that we haven't worked around yet. At some point the bugs will be able to path to multiple points. They probably won't go out of their way to target your power though!
- Map Editor: This is something we have planned. If we do go to Steam, we'd try ship with an editor and workshop integration.