My first game trying it out as Rebels vs Empire (land skirmish). I build some of those new MDU's. I use 4 of them (2 laser 1 repair 1 shield) and 2 MPTL's to attempt defending my big mine on those Build Pads... A Freaking AT-AA just fires 2 volleys of it's flak (which ignore shields) and every single MDU buildable POPS instantly.
I could live with rockets taking out my MDU's...but FLAK? They don't even have to try and bring in some big guns, or have units breach the shield. Just send a single AT-AA to bypass them, so your other units can mop up.
Long story short, my first impressions were the suck.