It's not surprising the rebels have trouble taking down these AT-ATs... They're straight up 2-D!
What we're looking at here is a giant to-do sheet. Every one of these cardboard units will need to be replaced with a good quality toy or model. It's a lot of stuff!
I just noticed there are different types of rebel laser turrets, although the game treats them the same.
The one that looks like a satellite dish receiver is the Atgar Laser Cannon... not exactly a low profile gun. The giant black dish easily stands out as a target for Imperial forces. I don't doubt whoever is standing behind it gets a good dose of shrapnel after it explodes from laser fire.
The other laser turret is the DF9 anti-infantry battery and it appears to be a safer spot for an unarmored freedom fighter.
Although 6 of one type would work fine for unit identification during gameplay, I'll need to find good replacements for both kinds in order to have the right look.