Why isn’t Rush available on the Contamination map?

I’ve been wondering why Rush isn’t available on the Contamination map.

I find it a bit disappointing, because it really feels like this map would work very well with that mode. Rush usually shines on maps that offer strong progression and a good balance between attack and defense, and Contamination seems to fit that kind of design.

Is this something that’s planned to be added in the future?

If not, is there a specific reason why Rush isn’t available on this map?

Honestly, it feels like a missed opportunity, as the map seems to have all the potential to deliver a great Rush experience.