I completely agree with you. The small things do make big differences.
I have made some changes to help fit better on other screens, but without having those devices, or knowing the resolution and dpi of each one, it’s very difficult to test. That’s one of the major problems with Android, the vast number of devices.
I have my UDOO and I’ve set the resolution and dpi to what I said above and it looks great. When it comes time to work on the theme some more, I’m going to work hard on making it fit on more devices. It’s just an overwhelming job to take on.