RE: MBO Class
Ken, if you are asking for opinions on MBR changes, I would move it back to 50 max. Moving it in would make it the same as HC, 5 yards is not enough to make a difference, personally I would vote to back it up wiht MBO.
HC setup is legal in MBR. Keep it that way. MBR is NOT legal in HC but there are VERY few differences, primarily arrows (fletch/screw in tips) and stabilizer.
I say leave it as is, if you want to change anything, move MBR backwards. The folks who " should" be moving out of HC can easily handle the distance anyway, an almost perfect HC score would still be a VERY high MBR score.
--Bob