Got some attack vids.http://www.youtube.com/watch?v=npuw2ftJfd0
-- Starting with Hobo Gundam Exia Repair. Unfortunately, I've heard no word on it sticking around.http://www.youtube.com/watch?v=zCY6WWcTrzM
-- Next is Tetsujin 28's attacks. I've noticed how enemy machines start to break up when they get shot down.http://www.youtube.com/watch?v=iO-ZRVSNLzI
-- The new OG unit's attacks. Basically a copy of Z2-1's OG unit but with a different coat of paint, the lack of kibble switching during attack animations, and a pilot who can actually aim worth a damn.http://www.youtube.com/watch?v=Aj1wWWcO2UM&feature=channel
-- Real Version Librasta, and....http://www.youtube.com/watch?v=g8Npy3ilQyU&feature=channel
-- Super Version Librasta. You get a choice later on that basically determines which of these units you get later on.
Additionally there's talk of secrets if you can get Macross F's Alto up to 70 kills by a certain point (you get the Red VF from the movies if you do this), additionally the sole secret unit from Z2-1 is back but it looks like you have to recruit her all over again. Additionally it sounds like you can spare Shin Mazinger's Blue Danube in stage 7 (Japan Route) by talking to it with Tetsujin.
Mechanics wise this game seems to hurdle the bar on brokenness as your pilots now have room for EIGHT skills instead of six, of which, Continuous Attack remains and SP Regen makes a return plus a new skill called something like SP Get(?) that nets you 10SP per kill per turn. Basically you get 10 SP back after killing your first enemy for that turn preventing such abuse like dumping all your SPs into Spirits and then reclaiming it all back on a CA murder spree or a souped up MAP attack. The good news is that the game has provided some better variation on the Skill Point requirements like having everyone score some kills on a map.
As for standouts in the individual units I've seen thus far we've got CG's Lulu's Shinkirou which is a defensive beast with a shield that can nullify up to 4000 HP worth of damage (to put this in perspective, out of the box grunt units would get one-shotted by that kind of damage) plus a hilariously long range sniper rifle and a massive MAP attack (and then Lulu gets his Ace bonus of a random spell on himself at 150 Will and is not limited by his spell list), then there's Macross7's Basara and his Dynamite Explosion upgrade song that grants all allies within his song's range Gain & Luck and if Basara has Hot Blood active on him so will all his targets (and he gets a combo attack with Gamlin who I believe is from Orguss), and 00Gundam's Setusna still has his 1.5x damage to all solar furnace using enemies from Z2-1 except this time almost everybody from Gundam and Code Greatass is sporting one (and then he gets the 00 and all the hilarity that it eventually sports).
As for plot spoilers (read at your own risk)....
Don't get too attached to Ester as she winds up ditching for about a third of the game (though she does come back near the end). At the very least it sounds a lot more optimistic then what apparently happens to Setsuko over the course of the game (par for the course at this point), but I currently lack the specifics as to what this entails. And for those who were waiting to see Gurren Lagan's finale's over the topness are bound for disappointvile (the best you're getting is a anti-GL unit that you free Nia from; no ArchGL or galactic shurikens).