Ideas for CS2D - READ THE FIRST POST (OP)! is the place to suggest any improvement for CS2D
As XoOt said, this can be done simply by lua and is therefore not really needed to become a game feature.
Thats wrong. Round restart is a specific console command, same goes for every server setting. They just can be additionaly launched with lua by parsing the right rcon command.
There is a suggestion thread ( Ideas for CS2D - READ THE FIRST POST (OP)!) Not required under normal circumstances (in my opinion) Can be done with Lua easily or just votekick annoying players