Are there options to have features not native to reddit?

Yes! Quite a few in fact. Just keep in mind these are not officially supported and may cause strange behavior in some browsers.
There are multiple Greasemonkey scripts available over at userscripts. Just search for "reddit" or head over to /r/greasemonkey to find the ones that you want.
A popular addon is the reddit Enhancement Suite that combines numerous feature requests into one package.

Have more questions? Submit a request