Ergon grips are just what I had in mind. I didn't realize they make a version with those "minimalist" bar-ends, so thanks for pointing them out.

I should have said, more efficient shifting. Currently my bike has grip-shifting, and I have to sort of yank from one gear to another. Of course, I am totally used to this so perhaps I should just stick with what I have. I've replaced the brake pads before but the braking didn't improve much. Maybe, as you say, this is an adjustment issue.