Unless you can clearly define this 'more' there is no need and no point looking at any other lens.
Secondly, the camera and its functions play a minor part in taking the picture. Main part is composition, light, situation, story telling etc.. nothing that is depending on camera settings and lens. If you want to do 'more' than get some good readings about landscape photography and composition.
There are some general statements that landscape images are usually taken with wide angle lenses. First of all, you are well covered with the wide end of your kit lens (16mm, equivalent to 24mm on full frame). if that's not enough then use the 'leg zoom' (step back), a few steps will make a big difference at this setting. Secondly, there are plenty of situations where you don't even need 16mm on your lens. It all depends on the actual situation. So best is to go out and shoot, review, analyse, read, shoot again, review again ... until you get a clear view what 'more' you want to do and what you need to achieve this.
There are only two items that are a near 'must have': CPL filter and lens hood. (Trash any protective or UV filter, of course.)
A good start for reading:
https://www.cambridgeincolour.com/tutorials.htm - equipment, lenses etc.
http://www.photographymad.com/pages/view/10-top-photography-composition-rules - baselines of composition.
