Why encounters with a difficulty slope are bad

[Sepix]

Let me elaborate on this a little bit. I don't particularly find all the mechanics in the fights bad at all i just hate that we get it fed spoon full all the time. Why is the 2nd add phase always harder than the first? What for? Can't they make the first one as hard as the second one and just keep the second one the same so people actually have a chance to train harder parts of the fight without having to play the majority of the time to get there first? Take Ifrit Ex as an example. Why can't all Nail Phases be like the last one? Why make people go through 2 easy iterations before giving them the one that actually matters? The first Nail Phases do not prepare you for the third at all. It is basically wasted time every single time. What is worse is that this tactic is used to lengthen content because of missing difficulty. Increasing damage and quantity of mechanics isn't the same as creating an interesting fight. Neither is putting 4 different fights into one just because you can. While we are at it, lets be honest ... Adds are starting to get boring by now as well because they are used for EVERYTHING!. I personally think they wasted some of the best mechanics in the Crystal Tower raids and put whats left over into coil.

I just wish there were more encounters with things to do beside having to focus on your main party role. Healers heal and nothing else, DPS do DPS and nothing else and tanks are useless 50% of the time because most fights don't even need 2 beside the odd provoke in between to share some damage.

Here is an example fight of what it COULD be instead of adds, more adds, oh look i am different now! What you beat that? Take more adds and i now do more damage too!

Main Boss
- Cannot be moved
- Deals slight damage to the tank.
- Is tanked in a magic field that nullifies all healing under normal circumstances.
- People inside the field are trapped and cannot leave after the fight has been started
- The magic field deals damage over time to anyone inside of it.

A small pet
- Deals moderate damage
- Cannot be killed and just needs to be held throughout the fight.
- Will place 2 debuffs on the off-tank
* One of them is permanent and gives a healer a non-curable 10 second silence if Esuna is cast on Offtank and has no Effect.
* The second one is removeable by Esuna and gives a healer a buff that enables him to heal the main tank and the melee through the magic field at the main boss.

Small Bomb Clusters
- Spawn throughout the fight
- Cannot be killed and doesn't move
- Will cast an explosion that Wipes the party after 15 seconds
- Needs to be slept, stunned or silenced to despawn.

Add some fancy spell names that deal damage to party members and some AoE circles to run out of + a tight enrage timer and you are golden. Now everyone actually has something to do beside their main role and you don't need to just throw more at the party to make it interesting. If I can come up with this in less than 10 minutes in a forum post they shouldn't have any trouble with their endless meetings and multiple people.