It's a Gift to be Simple

This is just a good anecdote for why we like to keep certain letters on our racks when trying to build a Bingo (but not at the expense of other good turns, of course). These are low-point letters specifically because they can be used in so many ways, especially with one another.

The letters usually saved up are RETAINS (a good way to remember them), and of course the Blank tile. Today I was able to keep most of those on my rack and knew I could land a Bingo. Then Maven played JOT, which suddenly opened the possibility of playing my Bingo (STEAMING) on two Triple-Letter tiles in one turn:

Now, this turn yielded 140 points, but the total POSSIBLE was 152. This is because the M could've been played one tile higher, which is a Double-Letter tile. Can you find what better word I could have used?

(NOTE: This screen shot was taken after the game was finished, which is why AH shows up alongside STEAMING.)