So I finally watched the first episode and it was actually pretty good. It's basically a rehash of 0079 but with a few twists. The protagonist, Flit Asuno, is actually pretty likable. He's not annoying and angsty and the kid has some balls since he's pretty eager to fight the enemy. I wasn't a fan of the UE or Unknown Enemy initially but that all changed when I saw them in motion. They're kinda mysterious and could potentially be aliens - something that was only recently introduced to the franchise. The visuals were pretty strong but that's expected since it's the first episode. BGM music is decent but it got really good when Gundam AGE got activated. I didn't like the OP theme though and the ED was passable. The things that really irked me were the character and mecha designs but I guess they'll grow on me as the series progresses.
Overall it's alright. It's not terrible like I expected but it's not spectacular either. It's a solid introduction and I am interested what happens next so I'll definitely be following this show.