I'll admit that wait times for DPS classes were atrocious back then, now it's not so bad. Guildhest roulettes I tend to get in within 5-10 minutes or less as DPS. Other roulettes will be around double the wait time of what the state average is (ex: 10 minute average wait time, I'm usually waiting around 20 minutes). The only time that I've had a much longer wait time in que is when I join in for a specific dungeon/trial/guildhest. But I've rarely had to wait for an hour (or more) on the roulettes as a DPS class.
Even if the developing staff were to have introduced a tank class (or healer class) instead of another DPS class, it wouldn't have much, if any, impact on wait times for DPS classes. As has been stated before, people of all types will try it out but it will most likely be those who normally play tank classes who will stick with the new tank class (the same can be applied to a new healing class). The reasons why more DPS players cannot be coaxed into either tanking or healing are many: for some it's boring, for others they don't want to deal with the verbal abuse should something go wrong (even if it wasn't the fault of the tank/healer because DPS was standing in bad), some don't want to even try because people don't want to be patient with dealing with a new tank/ healer.
So the issue isn't so much as the developers' problem but more of a player-created problem.
