A summery and details of episode 1 are on Toei’s blog, but I’m decidedly going to go more light on these now that we’re entering show territory, especially the episode summaries.
The gist of the behind-the-scenes stuff is that people have been referring to Ex-Aid as a Yuru Chara (or a strange/crude yet cutesy character, like a mascot), but they assure that fights will not suffer for it. As well, emphasis on the fact that the medical scene will be a place of drama, while the battles will be referred to as games.
There’s also apparently going to be plans for a monthly YouTube information program called Poppy Pipopapo’s Room (a character in the show). No word on if this will even be available to viewers outside of Japan but it seems like something they’d restrict in that sort of way.