I think it might be fun to watch the game automatically fill in all singles. I've been playing a while now and it's getting boring to double-click through the tedious final steps. (I find I can click-enter-click-enter-... a little faster yet.) It's nice that the new version 4.1m boldifies the singles, but I'd like to go further.
This feature request reminds me of the feature in FreeCell that automatically makes the obvious moves for you -- at the end comes the fateful moment when you make the last non-obvious move, and a whole bunch of obvious moves fall in place very quickly and dramatically for a big zzzzzzzzzooom breathtaking finish!
Every once in a while I play a standard game as fast as I can, just for a mental break. It helps to get this kind of stimulation, plus it scratches some kind of itch. For me it would be more efficient AND fun to automate this most-tedious part. Optionally of course.