The death of D-M-S
I played Natural Selection when it released, all the way up to part way through 2004. With NS2 in the very near future I decided to come back into NS, and immediately realized why I played it in the first place. A few rounds on the old familiar maps and it all came back to me. I was quite interested to see how tactics had evolved in the 5 years I'd been out of the game, and was even more interested to see that most were the same ones used back when I used to play.
With one major exception. When I stopped playing, the chamber order was Defense - Movement - Sensory. This was more or less completely immutable; Alien teams often had rage-quits if someone dropped sensory or movement first. For a brief time after the major sensory buff that allowed them to cloak everything nearby, sensory enjoyed a resurgence, then once again we were back to D-M-S. I had no reason to think it would change.
I come back now and defense is relegated to the 3rd hive. Sensory and movement fight for first hive, with movement seeming to be slightly ahead. Now what puzzles me most about this is that the Marine team doesn't seem to have any new strategy or tactics that I've been able to see. So why is S-M-D or M-S-D working against them now when it was an abject failure in the olden days? The chambers and upgrades haven't changed since I last played. I honestly can't figure it out. I'd love to hear some feedback from people who've been playing consistently all the way through to the present day, and thus witnessed the changing times first hand.