"Crusader-Mode" for ns2 ?

Hello there, im not sure if you guys are familar with the game "Dark Messiah of Might and Magic" but there was a gamemode in the multiplayer i really liked, the Crusader Mode.
For all who don´t know already this Mode contained a mappool of 5 maps. There was 1 neutral map, 2 "main city or base" maps and 2 filler maps.

Let me show it to you with a little "picture" :




[Undead Maincity map] [Undead Filler Map] [Neutral Map] [Human Filler Map] [Human Maincity Map]




The Game starts on the neutral map, if you win a round your team is pushing the enemy back towards their main city. For example the humans win the first round, then the next round will be played on the "Undead Filler Map".

The Game was over if one side managed to push the enemy back to their "main base map" and win on this final map. The further you pushed the enemy the more "siderelated" the maps looked like. The undead final map was a giant necropolis

I would love this kind of feature in Natural Selection 2, it gives the game a greater goal and you feel like actually achieving something by winning a game.

This is my first activity in this Forum so feel free to give your opinion on this.

If this english was bad sry, but I´m german and typed it between 2 ns2 games