I have seen a few people requesting new Mechs specifically for breaching base defences. I had a quick look around the forum and did not see anything similar to the idea I wish to propose (If it has been said before I apologise)

How about a Heavy Missile Module for large mechs that require a spotter to fire. The range would be long and they could only be fired at a spotter location in the same squad. The Missiles themselves would be able to affect the terrain and the spotters would be able to target terrain tiles for the "Barrage"
The spotters would be smaller mechs with a special target painting module.

The Idea would be to have the spotters head out to the base and target the walls, and or structures allowing the mechs with the Heavy Missile Launchers to launch a barrage on the base or wall. As these heavy missiles would not require LoS and affect terrain, they could be used to breach the outer walls and then the spotters could get inside and target paint the buildings inside for a second barrage to be launched.

The attackers would focus on keeping the spotters alive and defending your mechs with the heavy launchers, while the defenders would need to defend against the breach and attempt to take out the heavy launchers.

This may however end up in both sides sitting on opposite sides of the island and launching barrages at each other until one side gives up or is destroyed.

I have not been in any base defence or assaults yet but hope to in the future so this Idea may be completely impossible or just out right stupid, but none the less.

I await the immediate assault of comments of encouragement and discouragement