Anymore it's ust a crap shoot on crowds...lot of people put stock in crowd counters and subscription services (we don't) and with Disney coming out with different promotions thru out the year to boost resort bookings.....it's all guess work...
We go (because we can) when room rates are at their lowest and when a good discount comes out (be it an AP, general or pin) usually decides when we go plus the value season tends, or used to, have lower crowds.....
If you can only go dueing the holidays or alittle before or after, you really have no choice in lower crowds.....you do as you may and work around them...early rope drop, EMH's and FP's.....but the used to be slower times are getting eaten up, unless you like the winter months (we don't go then since we enjoy the resort pool and hot sun)....tends to be a little slower then......