I am excited to see this, and I will likely pre-order it, BUT, it looks a lot like Sol Survivor, which while it's not a bad game per se, it lacks quite a bit because you can never really change the aliens paths. TD games like Defense Grid, where once you set up a series if switchbacks or some sort of barrier rely on an AI to find their way around it, ("find the shortest path"). This game, at this stage, doesn't look much more complex than "Bloons TD", (no pathfinding at all), which would would be a crying shame given all the innovations and tech Stardock has.
Please, please, please, Brad. Consider AI path finding so we can make barriers and paths and can have some true challenges. Thank you!