I'm usually a support character but I also like to be able to deal damage, pure support is boring to me. So it's Miko for sure. Hybrid DPS/Support with a main focus on healing is exactly what I like to play. Damage done is converted to a smart heal on a teammate with the lowest hp, and that Chain Heal ability reminds me of Shamans in WoW which were one of my favorite healers.
After that, Kulev because I think his kit is powerful and will be a strong character, and he's a robotic snake using his old human body as a vessel... which is so whacky and I love it. Not to mention I can already see Mind Control being an insane Ult, making a 4v4 into a 4v3 (since Kulev will be controlling one of their players) and using that character's abilities and ult against their own team, then finishing off by planting that character on the tracks to get hit by a train... I can already feel the salty messages.