Dominion <3 Didn't even knew there was a Steam game, we do have the old boardgame, 10/10.
Don't undersell your game (I would totally do the same haha), it's in a good shape and it has it's own DNA like I said. And bugs be bugs, always from 0.1 to 1.0 right? And it's normal to get inspired too.
It was mainly where all the tooltips, flow, intents, map design and icons. Hell, even Slay the Spire 2 (I know you're avoiding it for now, you said it on stream) looks way too much like Slay the Spire 1 for my taste. I wish they took a bit of a risk and innovated a tiny bit more.
On the other hand Monster Train took the recipe and added some of their things over STS1 (clear direct inspiration) to a point where it didn't feel like STS1. That's what I meant. Sadly if I had any good ideas on how to spin STS1, I would try it myself haha, but I don't.
But I'm sure you'll find it piece by piece, especially after you are done with the 'base' game and ask yourself - NOW WHAT?
Good luck my friend, fingercrossed!