I just played Solarplant in my campaign the other night and had a suggestion. What about making doors between the rooms, rather than just along the hall? I found that my guys were just hanging out at the entrance and that first main room. They would hide, then move into the hall, shoot at any aliens that appeared, then move back. The hall was far too risky to advance down it, so I just sat at the entrance the whole time. And of course I had that message playing over and over again every time one of my guys entered/exited the hall.
If the rooms themselves had been connected, I would have had to watch my flank for fear of aliens. Even better, I could have sent a second squad through the rooms to flank any aliens rather than just waiting for them to come down the hall.
Overall a nice map. Kind of oversized, to be honest, but still nice.