Better?
As in better user experience?
Better images?
Better reliablilty?
Looks better hanging around your neck?
What do you see as the shortcomings of your Minolta X-7A?
As for your list of possible upgrades, I recently ran a roll through a Canon AE-1, so I will comment briefly on that one. Excellent build quality, feels substantial, good viewfinder, easy to focus, good controls, accurate meter. BUT. I did not care for the shutter-priority auto-exposure. And I found using the camera in manual exposure mode was somewhat awkward. In the viewfinder you can see what aperture the meter recommends. That's great in auto mode, if you are happy with the selected aperture. But if you decide you want to shoot one stop higher or lower, you need to press a tiny button on the lens to leave Auto mode, and then set the lens to the preferred aperture. The actual aperture you choose is not shown in the viewfinder, so in maual mode it's not possible to confirm that you are set to to the aperture while actually shooting.
As someone who has been shooting Pentaxes for several decades, another minor difficulty for me was, both the aperture ring and focusing on the Canon are "backwards" compared to my Pentaxes. If you are not set in your ways, that should not be a problem.
My recommendation would be a Pentax MX or K2, but I'm sure there are several others you would be equally happy with, depending on what it is you are looking for.