As for whether RBBC is more prevelent or not, here is a basic breakdown since the season expanded to 16 game. The first total is the # of RBs with 100 carries in that year. THe second is the number of RBs with 100 fantasy points in that year (0 PPR).
78, 63, 45
79, 54, 38
80, 51, 39
81, 46, 38
82, 24, 13
83, 51, 42
84, 45, 36
85, 50, 44
86, 42, 34
87, 38, 29
88, 50, 35
89, 41, 33
90, 44, 33
91, 40, 31
92, 41, 31
93, 41, 31
94, 39, 33
95, 42, 34
96, 44, 32
97, 45, 35
98, 39, 29
99, 41, 31
00, 38, 30
01, 43, 33
02, 44, 37
03, 45, 37
04, 43, 36
05, 45, 34
06, 47, 39
IMO, the RBBC effect has been pretty minimal but over the last few years it does seem that there have been 4-6 more RBs to eclipse the 100 point mark than in the 90s and early 00s. I suspect that this will mean that that there will be more RBs in the third or fourth tier scoring wise (Tier 1 being thr Top 3 or 4 and Tier 2 being the Top 8 or 9). It's that next bandwidth that I think will have more guys in it (Say RBs 9-15) and the one after that (Say RB 16-25) that will each have a few extra guys in that scoring range than normal.
Basically compared to several years ago when there might be 18-20 RBs that you would want to have, there may be 22-25 before a decent dropoff. But with some teams thinning out the workload a bit the scoring differential may not be great in those tiers.
Bottom line, I think there will be a lot of RBs that could be ok fantasy RB2s, but the uber studs will be more valuable because the in the teens to low twenties will score pretty close to each other. That should help a little in RB crazed leagues with seemingly more palatable options available that are at least considerations for starting and as long as you could field one of those guys he won't kill you.