Arch I think we must agree on everything Disney!
TSMM rope drop is just not worth it. I have tried it three times. Once it worked for us last month - on my third try - and we got on TSMM at about 10:06. And we waited for rope drop for about 10 minutes. I was with DS16 and we are fast walkers but still had a 16 minute wait altogether. Later that day we were able to ride it thru standby in 25 minutes. But during that trip the line was usually 30-35 minutes long. Just not worth the whole rope drop thing.
We tried the same thing in June only to be told at 9:55AM that TSMM was down that morning and would open late. So we watsed our time.
I also tried it in summer 2010 when they had two rope drop lines (one at Bugs Land and one at GRR) and I chose the Bugs land line which had a rope drop
after the GRR line already was opened. So we still waited in line at TSMM for 15 minutes after waiting at rope drop for 15 - so 30 total minutes.
Basically if you do TSMM rope drop and you try real hard and walk real fast you have a chance of shaving off 15 minutes (maybe 20) off your TSMM wait.
If they open on time and
if you are in the right rope drop line. And on mornings when DL opens earlier than DCA you sacrifice a DL morning.
I am 100% confident this will all change once Cars Land opens next summer!

But I will never do TSMM rope drop again in its current form.