Personally, I’ve never had an issue with the downed state in WvW/PvP as it does add that aspect of being able to rally which can be intense as your last sliver of health is almost gone and then someone you attacked dies and bam you’re back in the game. As for preventing resing while in combat, I still have never really had an issue with it. Combat ressing does favor the larger group, but then being a larger group is always going to have its advantages so I doubt it would have as much impact on a 20vs50-80 battle. More impact though in a 50-80vs50-80 battle I would think. I imagine though players will just start playing a lesser variety of classes and builds, and all just go facerolling tank and how boring would that be? I’ve personally enjoyed many battles that raged on for minutes because both sides were evenly matched and evenly resurrecting downed friends and it just made it seem so much more epic to see which side would come out on top.
The whole ‘breaking the zerg’ concept is itself a broken idea. The game was designed to be a zerging game, even in PvE. The only places where the game isn’t designed for zerging is PvP, dungeons, fractals, and storyline instances. Ok, well a lot of PvE can be done without a zerg, but nothing prevents it, plus the mega boss battles are purely zerg oriented. It’s not like they designed Tequatl such that both his left and right foot have to be attacked simultaneously, along with his head and tail in order to defeat him or to have any other tactic other than stack up, buff, 1,1,1,1,1,1, timewarp…etc.
What would be better than breaking the zerg model itself would be to redesign WvW such that players aren’t solely in charge of balancing how many players there on each WvW team. i.e. a system that evenly distributes WvW guilds and players between teams for the duration of each matchup or season, based on gathered WvW statistics, players’ normal WvW playing times, and so on. Then at least teams would be a bit more intelligently balanced in size, and theoretically also in skill. At that time, teams not wishing to go all one big blob could still break up into smaller teams while those wanting to blob up still can. Which tactic comes out on top would still be up to the players themselves, but at least some programmatic effort could be made to help ensure both sides have nearly equal numbers of equal skilled players across all time zones.