Ridorana: The perfect design

[Ameela]

One thing I will say is that I dislike how much most of the bosses discourage uptime.
I feel like a good FFXIV boss lets you keep as much uptime as possible while still resolving the mechanics correctly (on a melee class at least) but pretty much every boss in this raid has mechanics where this simply isn't possible, and I'm not talking about the boss jumping out of the arena.

Famfrit has the targeted ground AoEs and Dark Ewer, the target AoEs aren't too bad if positioned correctly but Dark Ewer, more often than not, is just an annoying mechanic that makes you choose between taking unnecessary damage or losing DPS, it's erratic and unpredictable and when combined with the other mechanics in the fight it's just not fun to try and optimize.

Belias is probably the best boss when it comes to this problem as every instance of it can be avoided if everyone knows what they're doing which, of course, is very rare. You'll get instances of people running tethers through the middle of the arena forcing people to move around it and most of the time the main tank won't know how to position the boss correctly so that you can still hit it while Timed Explosion is happening, but again these problems aren't too bad if everyone's coordinated so I can forgive it.

Construct 7 has Pulverize which is just... dumb, the area of effect isn't clear and if you're a melee job that doesn't have a lot of mobility (see: Paladin, Ninja and Monk) you're pretty much screwed whenever this mechanic happens as you either lose out on a few GCDs or you get a damage down stack.

Yiazmat has the same problem as Belias where it's mostly dependant on positioning of the boss and people not screwing over the rest of the alliance, but the charge Rake is really annoying if luck isn't on your side when it happens at the same time as Magnetic Lysis, speaking of which it's also really annoying that if the boss is positioned badly during this mechanic and it does the conal AoE on either side and not the middle you have to choose between petrification or a vuln stack and a potential float which will kill you if the boss casts Cyclone after that.
Oh and if you're a melee DPS you can pretty much forget about positionals for this boss, he's way too big for how much he moves around and how much YOU have to move around.