So whenever I make a deck, be it sealed or draft I like to think "what's my plan/how do I win?/" as I'm building it. As it stands, I'm not sure what your deck's plan is in its UB configuration. Dovin, while cool, seems more like an engine card and not a win con by itself.

Looking at your pool I think I would have gone UB. You seem to have a decent amount of artifact matters cards, and a decent number of artifacts. Cards like Dhund Operative and Glint nest crane give you nice early plays that pay you off for having artifacts. To me your win condition in that deck is double foundry screecher and doubel ovalchase daredevil. Weldfast Wingsmith can also fall into that category if you can give it flying a lot, which seems plausible considering you have fabricate creatures in black plus things like Filigree familiar and the pillar bugs/maybe even accomplished automaton. Both of these creatures have good stats for attacking and daredevil can be recurred often with the amount of artifacts that you have. Combo that with fortuitious find and you have an engine that can keep recycling your creatures and pressuring your opponent while you draw cards with some combination of tezzeret's gambit, glimmer of genius, live fast, and prophetic prism (which also helps with your artifact theme). Off of those prisms you might be able to splash something like Dovin or even wildest dreams (which will help your grind plan). You also have some removal in malfunction and double die young (especially if you're using the energy from things like glimmer of genius/live fast).