^Misaki isn't as much of an angel as a portion of the fanbase makes her seem, both Mikoto and her treat each other the same exact way.
As for Gensei being happy at Touma and Gungha fighting Mikoto, of course he would be, it's basically a fight between two powers that are similarly unknown to both science and magic vs an esper that is going beyond level 5. The Kiharas would literally kill everyone in Academy City in heartbeat if it meant to extract even 1% of data from that kind of fight... I mean, Gensei kind of said so in the episode.
So next episode will be focusing on the Kuroko vs Mitori fight and after that... Oh boy.
Sad to hear about the delay.