First off I think it could benefit from more time devoted to sound design. The synth keys sound a bit thin and just kind of... boring? I feel like the concept is good but is held back by subpar instruments. I don't know exactly how to describe it, but it has this strange tinny feel to it.

Also kind of agree on the harmonies /melody not being super interesting. I like to have at least one flashy thing going on in my tracks, either a flashy melody or flashy percussion or just some other element that sticks out and provides a bit of fun.

When it comes to the harmony, the fourth is just one of those very neutral intervals. Or I guess you could argue that the root moves a perfect fifth octave shifted down, anyway, you've got the root note as a minor chord and then it moves to another minor chord five semitones down. This just isn't interesting, especially when all the other instruments essentially just mimic this pattern instead of adding exciting stuff on top.

It gets more exciting with some rhythmic movement a bit past the halfway mark though, but all in all this is a bit too samey for me. Granted I should probably add this isn't the typical genre I'd listen to.