1) Players should be given dishonor when they go idle during a match for 20-30 seconds or more (and have a repeat pattern of doing this in Ranked matches). Now there is already dishonor awarded when players disconnect from a PvP match, but players that tend to either rage or AFK should not benefit from other players that are actively trying to win a match.
There is nothing more discouraging to have teammates be assigned to your team by the match making system that repeatedly AFK and there is no penalty to those players that have a repeated pattern across multiple games for doing this.
I encountered too many players that literally gave up after losing the first fight in a match. Although it is extremely hard to come back from a win when the team is down 150 points, it is possible. Playing a match until it is over should be encouraged and perhaps more Pips should be awarded to the losing team when they come back to within 100 points.
2) Please update the match making system or how players gain rating experience when climbing the ladder. Once a player reaches platinium, a player is faced with the following choices : to either start playing minimal games to maintain their current ladder ranking or continue to play despite the risk of receiving a loss being greater than the reward for winning a game.
The current ladder system discourages high rated players to keep playing all season long and forces them to play on alternate accounts to continue playing PvP without putting their top 100 rank at risk.
Perhaps the ladder decay rate should occur more frequently for high level players or the minimal games a player is required to play a season should be raised from 120 to 200 matches.
3). All alternate accounts should be linked together so that players cannot smurph the system as easily.
What is happening now on North America's server, is that once the top 5 players reach their desired level, they jump on alternate accounts for the remainder of the season to prevent other players from obtaining a top 20 spot. Not only do these players have an artificial rating much lower due to playing fewer games, the players they beat will receive a greater rating loss when facing other higher rated players.
If all alternate accounts were linked under 1 commonly used IP address, it would be harder for those top players to stop other players from climbing the ladder.
4) Botting used to be a big problem in season 15 and previous seasons. Interesting enough, I did not encounter any obvious botting during season 16. I wish ANET made it more public about the number of accounts that are either temporarily or permanently banned from playing Ranked matches and the reasons for why those accounts were banned. Of course, don't make the actual names of which accounts were banned public, only the number of accounts temporarily or permanently banned.
With the new titles that are supposed to be coming in Season 17, I fear that match manipulating will occur more frequently as players try to intentionally cheat players for a higher rating. I believe if ANET marketing was more vocal about how they monitor accounts and repeat offenders the gaming community will improve over time.
I hope the next expansion will have more PvP content and WorldvsWorld content. I know the alliances system is coming for World vs World, but perhaps some of the PvP problems that I have mentioned could be addressed when the next Guild Wars 2 expansion is released.
5) At a bare minimum, we desperately need Guild vs Guild 5vs5 Ranked matches that utilize the same amulet/rune system that is used in PvP, but would be completely separate from the current solo/duo Ranked system.
I remember the original Guild Wars 1 Ranked ladder for GvsG and really hope that we will eventually have something similar that we can call Guild vs Guild PvP in Guild Wars 2