Yes regarding small pocket. Super dense and up to two boss packs there, but mostly none. I usually just stand at the entrance, howl and wait a few secs to see if anything is there. If I go in deeper, the merc starts killing things and horking any eventual unique/champion becomes more of a chore.
Furthermore, the right-most portion is mostly devoid of packs once it widens. I have been just tele'ing to that first small square where there is a well and usually a spawn. One to four packs in that narrow section on the way. Some backtracking to get back to the Lvl2 leg, but not too bad.
@Oskros' new run counter is indicating 8.34 packs per run. My times are ugly right now as I figure out how best to run it, but I just realized that the Black Marsh waypoint is closer to the entrance than Outer Cloister. Run times should get better for that one reason.
Edit. Here is the Black Marsh waypoint relative to entrance:
Both Dweb and Heavens Light dropped in first 30+- runs. I need to roll new maps more often...