Ideas for web content testing using protractor?

Has anyone got any ideas on what else is good to test regarding web content and stuff that protractor is capable of testing?

Currently I have tested links to see if they go to the correct page? also I have tested text colour and decoration when hovering over text and expected it to change colour?

testing to see if text appears where it should be seems a waste. Just wondering if anyone on here had any good ideas on something worth testing?