Spying is just part of WvW. What I have problem with, is when a “Spy” or just some jokester, depletes supplies to build many siege weapons, that blatantly serve no purpose but to waste supplies and hit the cap. A possible solution, a script that runs, and when a person is tagged by the script in behavior that seems nothing more but wasting supplies, said person is hit with a warning message. If said person continues, they get locked out of WvW for 24hrs or better yet, gets flagged as a “Spy”, and is allowed to be killed by it’s own “teammates”.
Hacking is always a problem with any game. A possible solution is another program that tracks players movements. When a person is outside the normal plain of movement, that person is flagged. For example, the program will know there is a wall and that wall is intact. If a player magically moves across the wall then said person is flagged. If the behavior continues, that person is locked out of WvW until Arena.net can investigate.
Zerging can be fun but at the same time it can become boring after awhile. Zerging is part of the game but I personally, would not mind slowing the Zerg down. A possible solution, NPC’s in WvW hit-points scale with the size of the Zerg. Let’s face it, NPC’s are nothing more than fodder against a Zerg.
To provide 24 hour GM coverage could be quite expensive if on the payroll. If this was a monthly subscription game, then I would say the lack of GM coverage is inexcusable. However, being Buy to Play, I understand about budgeting. A possible solution, give in-game perks for people who are willing to be GM’s. I am personally a casual gamer and can’t stand grinding mats. So, if I was allowed to give myself mats for my trade skills, a 3 – 4 work week, 3 days 12h shifts, 4 days off then next week 4 days 12h shifts, 3 days off, and Arena.net isn’t extremely anal about the agreement I would need to sign, I would easily volunteer my time to provide 6pm – 6am coverage for one of the servers and I bet, I am not alone. To ensure there is no abuse by GMs with their GM perks, each GM should have their own log file created every time they log in, on Arena.net side and their every action logged so Arena.Net can review the file, if need be. Not to mention, if any GM is doing anything blatantly on the lines of cheating, many people within the GW2 community will record a video and send it to Arena.net. So, there would be some self regulating as well.
Coverage is something some people say is a problem. I would suggest allowing the WvW community to waypoint towers. This would allow for more mobility around the map and possibly better coverage.
Just some suggestions.