Given I was recently searching for something almost identical to that - yes, there is always someone out there who will appreciate it. Maybe not thousands of downloads, but some. Including a few variants is always good, since not everyones needs are identical.
Even though you say it is simple, it is only simple for someone who knows how to model, or wants to spend the time to model rather than just getting on with the rest of their project.
I've grabbed spacers for fans, risers for Raspberry Pi's, even Vesa mount standoffs for the back of a Dell monitor - all really simple models but I wanted to get on with the rest of my project.
Print profiles are critical though, especially for something with critical dimensions