As much as I love Blitzmon, I kinda lean more towards his earliest design...I'd rather prefer that kind of insectoid raw wings and his less hefty appearance, also I'm not sure if it would have fit good with Junpei's physique. As for Bolgmon, that pair of feet feel like a good tweak in my opinion, although I'm not bothered at all about his final appearance...I mean an insect tank with a cannon as a mouth? Who can complain about it lol