Thanks for the feedback.
I had the tiles split into three categories: scenery, buildings & river and had them weighted 50%, 30% & 20%. Now that you mentioned it I think rivers should’ve had bigger chunk of that pie at least. Selector would’ve made it feel more like level editor and I really wanted it to have the “what am I going to get next” feeling present. I know it can get frustrating to shuffle through looking for that particular piece to fit in perfectly to the river you have otherwise perfectly laid out.