Last several Shroud runs I noticed something odd. Or rather, it is something every Shroud party I ever participated in did, but I never thought of it much. Look at the order of portals:
http://ddowiki.com/images/M_shroud.png
First portal to spawn is right in the middle -- and at the bottom level. So why does every party I've ever been in starts the raid in this sequence:
1. Kill mobs in front of entrance (OK, that's obvious)
2. Run east, then up the ramp to SE corner, then along upper floor north and west
3. Make a big circle along second floor, then jump down (some people jump earlier than others), and then head to the portal in the center
AFAICT, every Shroud party does that. Why not just kill the mobs and go straight to Portal #1?