Very good. Kogasa almost dropped a slur on me 10/10.
There's not much penalty to scrambling at the moment though other than fire counting turn. It might technically dock points from using up a turn but it's usually still much faster to resort to Scramble if the word is 2+ turn away, and higher score from not using as much turn sorting character together.
As for fire there's basically no recovery on first fire spread unless you use all adjacent 5 tiles at once which is a bit rare. Bombs and rock didn't really play much mechanic since it is relatively rare, and beer tiles kind of shares problem with scramble.