Ah I did bot once with a Blitzkrank. Was hilarious. He kept calling himself "Bitchkrank" and how he was going to offer hugs to everyone. I've tried support and I'm alright but not amazing. Prefer ADC but might try support someday. Last time I tried it went poorly xD

Well it depends. If your enforcer looks rather abnormal then he or she would probably need a human form. If he/she looks like a regular human then there's no need. For example, Sandman's spirit form has wings and needs a human form to mask that.