It sounds like the Respawn game types would fit what you're looking for. I'm working on adding more flexibility so that you can design your own game types using all of the available options.
Adding and re-adding players during a game is on my list of things to add.
Lazer Swarm Command Center 1.0 Beta 3 is now available. Download it now! Let me know if you find any issues. 1.0 Beta 3 (2014-03-08): Fixed taggers being unable to join games if they pick the same tagger ID as an already joined tagger. Fixed players not being neutralized in respawn game types. Fixed...
Lazer Swarm Command Center 1.0 Beta 2 is now available. Download it now! Let me know if you find any issues. 1.0 Beta 2 (2014-02-23): Fixed a possible ArgumentOutOfRangeException when opening the Options dialog. Fixed a possible NullReferenceException when taggers join a game. Added more game types ...
I have the respawn game issue fixed. I can't reproduce the countdown timer issue though. What value are you setting it to? When are you setting it? Can you reproduce the issue and then send me a log with View->Log->Save to File?
Thanks for the report. I'll take a look at these issues. Did you get an error or something on the Bugzilla site? To help me debug, could you tell me what game rules you had set for the respawn game (game length, reloads, etc)?
Yes, there is a newer version that I'm working on with the additional game modes you saw in the screenshot. I have plans to add other features such as slow tags, neutralize, zones, and more.