I love the first idea! (partly because of my support for clan optin-out that you managed to tug). But I think it would be great. The character space should be pretty short, so it doesn't become player biography. And for the offensive words, I think the global censoring system should apply to this (for ease). I know that the global censoring system is really horrid, but you can modify your clan info is messing up.
The second has some issues. SC has repeadedly stated that they dont want to add negative information in player profile (often referring to showing clan war loss). The donation ratio could be bad, but it could also be good. In all practicality, it this was implemented, I don't believe it would be the donation ratio but just total donations this season.