Talk:Keshin Uchiha/@comment-32434443-20170911030251/@comment-25156300-20170911220832

The issue with doing that comes when the character is too young to have that much. Your character is only 17-21. Not even Itachi had all 5 nature types, and he only had his clan's kekkei genkai.

Just saying a character only uses a little of each one doesn't fix that. It's supposed to take years to learn one nature, so getting all 5 is extreamely difficult. (For Kakashi, copying all 5 doesn't count, since he doesn't actually have those natures). And kekkei genkais are usually exclusive for a specific clan or character, which makes it difficult to say your character has them too.

So it's not automatically bad, but it may be better to put a limit on them.