My experiences are similar to your's @alexpikkert. I submitted the stepper motor early as advised by the staff., and then continued to work on it's development. If my module does not get 1K vote in 4 more weeks, then I will have the MarkII stepper bit waiting in the wings. Same thing with my submitted, but not-yet-approved time of day module. Of course, it was lacking in several areas, so the ToD MarkII (half done on my bench, with improvements like 200x increase in precision, WWVB control, battery backup, etc.) will be ready when needed.
I figure it's the bit LAB, not the bit all-finished-and-ready-for-market. I do however, find the feedback here in the forum to be much more extensive and helpful than the encouraging words one gets in bitLAB comments. Plus, I enjoy sharing my fiddlings with all of you all.