Since spotting and reconnaisance before a base attack is DIRECTLY tied to how difficult and immersive the game feels. Let's say you can max have 5 drones (in coop 3/2/1 maybe) you would have to plan more and "become" your role and where that role mark first. Since we have classes why not add more immersive and fun tactical elements:

The Tank (Assault) marks enemies in the front and around the breachpoint.
The DPS (Sharpshooter) marks high rises and potential reinforcements.
The Support (Medic/Panther) marks the flank.

Each player consumes a drone and tries their best and improve their personal skill with the class they chose. Everyone died? Gather at Bivouac, craft a new Drone if necessary, and conquer.

I think Extreme, Unguided, Hud Elements Gone is easy as hell when everyone stays in the air for 10 minutes spotting ALL potential surprises.

And make Breach Torch a skill. Makes sense since there's 50/50 chance that you can use the torch and when you can you rarely have to. Crafting something and have it take up inventory space when you rarely use it is dumb gameplay mechanic imo.

Or build new fences for 99% of Auroas bases so they matter and furthermore so Breach Torch does as well.
First suggestion might be easier.

More additions: Remove Syncshot Drones. They make no sense (is it a fun gamplay mechanic?) and just trivializes the game itself.
Or enable them on Arcade/Regular.