What if "battle system changes" includes dividing DPS types

[Akonyl]

Along with the other reasons, WoW isn't really a great example of a better queue system because the content all takes different ratios of players, which ends up being even worse because it ends up making certain roles more necessary than they were during leveling, and others have to struggle for spots. 20% of a group is tanks while leveling up, but in a 25man raid that has 2, maybe 3 tanks, that's 8-12% of the group as tanks, only allowing half of the tanks as when leveling up. Healers are 20% of a group while leveling up, but at max level there's usually an extra healer, 3 in 10 mans and 6 or maybe 7 in 25mans.

XIV at the very least manages to keep its party composition the same throughout content (except 24mans, which were never really high-end content anyway), which helps keep people from leveling classes and finding out there's not any room for them after they spend all their time leveling.

The ratio of tank/healer/dps isn't static, and adding another slot isn't just going to totally cure it. If dps queues get noticeably better, the people who switched to tank/healer for better queues will just end up going dps again and bloating the queues. If dps queues get worse, more people will jump to tank/healer. It's a balancing act, and rebalancing all content in the game just to try to alleviate a bit of dps queues seems like a terrible idea.

[Vanitas]

This would make things infinitely worse for dps queues but at the end of the day I don't really care because I'm a tank main!

[Iscah]

Given how often I'm paired with another caster in Expert roulette, I'd hate to see the effect on those queue times if we could only go in one at a time.

[Physic]

the addition of trusts and other ways to level solo will likely take many dps out of the pools.

[Riblet]

Sure, why not? Apparently DPS sub-roles are as important as the Healer role when it comes to which classes they create, so why not give these sub-roles specific raid and party slots? Queue times are irrelevant when it comes to fairness.

[Burningskull]

The Duty Finder already tries to match one melee with one ranged when queuing for 4 man content. I'm sure it probably tries to match 2 melee and 2 ranged for 8 man. However to avoid extremely long wait times it also probably has a if statement that says "If X amount of time has passed match melee with melee or ranged with ranged." With 3 - 6 slots dedicated to DPS their wait time might be a little bit faster since the game is pulling more DPS into one place that it was before, but if people are not playing tanks or healers then those 3 DPS are still going to wait till the DF can give them to the DPS.