I always look forward to going to see the latest presentation of this at the Guthrie Theater here in Minnesota. Unfortunately it's been a while since I've made it, but it AM going this year.
Anyway, the last time I saw it it was done 'in the round' well, not quite in the round, but close, more like 3/4-round.. anyway, the part I liked best, and it's kind of sad that this is the main thing that jumps out at me, When scrooge was walking down the street, and up to his door, the stage was empty.. or mostly empty anyway, then suddenly, the door just kind of shot up out of the floor. Very cool.
Anyway, I guess that doesn't help or answer your question at all.. but if anyone is ever in the Twin Cities around Christmas, try to catch the Christmas Carol at the Guthrie, they always do a hell of a job