The more senior the designer, the more abstract the problem they should be solving.
To break it down more tangibly, let’s look at some examples of levels and appropriate responsibilities:
Designer Lvl 1: Design a form that lets people edit their profile. Pretty scoped—assumes there is a profile, and that the solution takes the shape of a form.
We learned the hard way that new products are hard enough to figure out, and we should make as many things as familiar as possible. Again, life and new products are hard enough. When you can use a familiar term instead of being original, do so. Never opt for a solution that is more creative but less effective.
"Good design is a renaissance attitude that combines technology, cognitive science, human need, and beauty to produce something that the world didn't know it was missing." –– Paola Antonelli