eh...
Gundam Build Fighters is about as kid targeted as the franchise gets, and despite being Angelic Layer with gundams, it's still actually rather good.
Slowing the series down hasn't helped Macross. Delta was so generically terrible that Studio Nue gave the franchise to Sunrise to fix.
Fundamentally, Sunrise/Bandai have been just getting too cowardly and don't take their series all the way without backing off at the climax of the series. Happened to Witch from Mercury, happened to Geass three times over, happened to Valvrave, it happened to 00.
About the only series where they decided to go really hard in the third act was...Iron Blooded Orphansactually Buddy Complex, and that started off too reserved...and Idolmaster Xenoglossia which was just incredible all around despite its absurd premise and IP mishmash.