This completely overlooks the fact that until this point, those were the most powerful and efficient classes on the server.
In my post I clearly stated that Monks, Rogues and Rangers are each capable of serious DPS with very little effort. The part where their "serious DPS" was noted is fairly key here, as far as my "completely overlooking" of facts.
There is a reason I didn't list Bards and that is both because their individual DPS is not at the same level (although their contribution to the group may very well be) and that controlling them at a peak performance level takes more effort than any of the other physical DPS classes.
You make the assertion that Monks, Warriors, and Rogues and the most popular classes on the server because they are easy to play.
Is it not true that the majority of the players on this server are boxers? Often playing at least two characters at a time?
When it comes to boxing more than two characters at a time is it more feasible to add a Necromancer box, alternating "ten or more" dots on a target at a time? Or to just stick a Monk / Rogue box on the target with only auto attack on?
The fact is that as long as this is a server dominated by players controlling multiple characters that the characters which require the least maintenance to perform sufficiently well will be the most popular characters.
Classes are played because of what they allow people to do with them.
And they will do so regardless of how many buttons it takes to play them.
I would completely agree with this statement if each person on the server only played one character. That is clearly not the case.
Instead, classes are played because of how they fit into an ideal boxing setup that will allow one person controlling multiple characters to defeat the widest range of content possible. So, in fact, the "number of buttons" it takes to control a character becomes a serious concern as the player's attention is split between an increasing number of characters.
The day casters ... become irreplaceable DPS on raids due to increased rampage damage or PBAOE damage to melee, is the day casters become more prevalent on the server.
No, that's the day that either rampage or PBAOE damage is reduced because the developers are aware that there needs to be a level playing field and that no DPS should be irreplaceable.
In the same way that Tyler is not going to make raids impossible without a form of crowd control from either an Enchanter or Bard, I doubt he would be willing to make one specific class or even one specific type of DPS a complete necessity for completing content. Doing so would be a poor solution because, rather than incenting people to play the class by making them either more fun or more approachable for players, it simply mandates that you bring the class for success, resulting in players who are not necessarily interested in the class being forced to play it if they want to succeed.