This is my suggestion for a new lockdown game ( I know Dammasta tried already http://forums.spiralknights.com/en/node/31207 but I have new rules ).

Frist of all this game will have a new class (recon etc.) the capturer.

Rules:

Each team has one flag at the teams flag area and one captured flag area. The team members pick the teams capturer (with votes or ?). The capturer has no weapons only a shield and the capture pack where places the enemy's flag. The other team members must protect him so he take the enemy's flag and places it to the captured flag area where the flag stays for 10secs then disappears and appears a new one at the enemy's flag area , after this the theam which captured the falg takes 1 poind. Within the 10secs the falg stays at the captured flag area the enemy's theam have the chance to take it back.
If the capturer dies while having the flag the team capturer becomes the closest team member to him until he revives and the flag lies on the floor until one of the captuters takes it. If every team member dies the tam capturer becomes the first to revive until the real one revives. The first team which reaches 30 points or the one with the most points when time out (5-6 mins) wins the game.

Tnx for reading and please post your suggestions about the rules if requested I 'll post sketches.

(PS I please ask the Game masters to think about this and if possible develop this)