I'm really not liking the characters, especially Takaharu and Yakumo, who's acting like jerk, which reminds me of Kyoryuger character, except it's worse IMO. Only characters I kind of like so far are Nagi and Kasumi.
What's with Takaharu screaming? Who does he think he is, Gentaro (Fourze)? I really can't stand that.
The fight choreography is nice, but sometime it looks like they are trying way too hard, which can look very obvious and cheap IMO.
The balance between comedy and drama is also awkward, where it's not balanced out very well.
Only thing I really like are mecha action, where design is very appealing, and their action are fluid; huge improvement from last 2 series IMO.
Probably the best since Go-busters IMO... ok maybe not that much, but it's close.
Other than that, I'm really not digging too much.
I might be the only person in this forum (or world) who think this way, but this is my opinion.
It could change later however, but I wouldn't hold my breath too much (especially, when StarNinger arrive, where judging by the look, I'm expecting "Genta 2.0" (ugh). I really can't stand Genta).
That's my thought so far.