A bit surprised, as a natural reason to introduce the Vietnamese community would be to see the effects of the oil spill at their greatest economic impact.  I hope there's a plan for that, then.

The spill would probably be in Season 5. This season ended in the spring of 2007. Unless they jump ahead a year (which I don't envision Simon ever doing), it'll probably fall into a fifth season. Here's hoping HBO keeps it around that long.

Who's Added To The Full-Time Cast Next Season?
With Larry moving back to New Orleans with Ladonna, it would be great to see him added to the full-time cast. I would imagine Linh will be added, as well. The show added three for season two (Morse, Ennenga, Seda). Sure it's an expansive cast, but I have a feeling…