For lower level content, the changes won’t matter.
There are still not enough people leveling, most people are going to be doing wrath content and only a few will level alts, if they haven’t already.
It takes longer to get to dungeons without fast mounts and walking to the dungeon is hazardous; you can get killed by mobs or enemy faction players prolonging the time to even start the dungeon.
Faction dominant servers are great if you are on the winning faction. Otherwise, good luck forming groups with 50 total people online (most max level) or even getting there without getting corpse camped.
At least allow RDF for low level content.