Battling against arrangement

I’ve been battling against my own track for the past 4 hours. When I started with a 16 bar loop it sounded like the best thing I’ve done so far. Now after stretching the 16 bar loop into a 3 min track, it just feels too boring and repetitive. Any suggestions for this? I was thinking maybe introducing a bunch of stabs and details to make the track more nuanced. How do you approach the stab situation without making the stabs and details repetitive too?

It gets so frustrating some times (all the time) when I have a good idea but I just cannot make a full track out of it.