Heyho,
I’m a bit behind, bear with me 
I recall Gundrak using the north entrance, with the serpent boss first.
I noticed that the current version uses the south entrance.
It’s pretty cool but it’s become standard to skip skip skip.
Which is a bit awkward in a leveling dungeon, for a start.
More importantly, this path leads to a pretty high wipe chance - handling a boss and a pack or two at once, which is a challenge due to not outgearing it.
Tried Google but didn’t find anything… Why was it changed? Is everyone doing the skip path even in a challenging difficulty?