The big one is whether or not people will care. Technical bugs are easy. Rejection and criticism are much harder. I've come to think that the pop wisdom of "product releases" seems to be a way people often cope with this fear...I've behaved similarly myself. Currently, my favored article is https://blog.ycombinator.com/minimum-viable-product-process/

Getting out and talking to a few people early lowers the amplitude of potential rejection and indifference because there is less psychological investment in a project or idea at an early stage. It also provides a means for empirical evidence about what people actually care about and use...and that's better than imagining because imagining often just becomes wishing.

Ship something. Good luck.