Transfer into mid game
Oh my god, that's brilliant! But aside from that. Say that my bishop is on... d3. I still lead in development, but I have no clear moves. How to I kind of transform into the mid game? Is there a "rule of thumb" way of thinking?
Doesn't white Bd6 force black to trade that rook for a Bishop (good Bishop though) to avoid a mate? After that I would take the h pawn and then look for tacos tactics that exploit the king safety and expect to find them. Meaning activate rooks and get queen to a high mobility threatening spot

Black had a death wish castling to a damaged queen side with so many of your pieces already aimed at it. You should've smelled blood in the water and gone for the kill right away instead of thinking about middle game positions. Sometimes there is no middle game!
Doesn't white Bd6 force black to trade that rook for a Bishop (good Bishop though) to avoid a mate? After that I would take the h pawn and then look for tacos tactics that exploit the king safety and expect to find them. Meaning activate rooks and get queen to a high mobility threatening spot
Yes so that's another question I guess. If most of his pawns are on dark squares. Is a light bishop for a rook trade still a good trade?
Now in this case it's probably good since his pawns aren't locked to dark squares, but say that they where.