That would give us the chance for Sam to become "daddies girl" to Spencer. That is both extremely amusing and slightly disturbing at the same time. And cute. XD ---
I'm not so sure that Spencer is really a "father figure". I really don't think that he is - even if he is Carly's guardian. Guardian doesn't really mean parental figure. For some, of course, it does. But Carly's Dad is still in her life - Sam knows him too (I can only assume, if in iDon't Want to Fight" it was their fifth year friend anniversary). ---
Besides that - I know a lot of people who are actually old enought to be my parent, but I consider them friends. And if they were my guardian, I'd still only think of them as friends. Plus - my brother, who's ten years older than I am, and if he needed to be, could be/could have been my guardian - I don't think of him in a fatherly figure way at all. BUT - he has had his moments, like Spencer, where he has kind of acted the part. But he will only ever just be the brother - not a father figure - even if the real father is out of the picture. (Ooh! Total parallel there - I should get brownie points.) ---
So while Spencer being the guardian is probably one of the issues that is hardest to ignore/get around - I think that while it DOES apply - it really kind of doesn't. It's more towards the age factor in my opinion. ---
However, were we to COMPLETELY skirt the "creepy" line... a father/daughter or friend/friend kind of affection - hug/kiss on the cheek would be adorable. And it would be wonderful to see them having more affection. Whether it be comforting, excitement (
Carey/Arwin anyone? ), or well... anything else. And the crush - that could come too. XD It's my favorite idea - because it's most likely to appear in canon.