I never said it was new, but stuff like that is impossible with a single tank and healer. the fights have to be designed in a way where the battles are relatively safe because a single healer wont be able to keep the tank and the dps alive. And 10,20 and 25 man parties have creative mechanics because like a ffxiv 8 man, multiple tanks, multiple healers can be used to form smaller parties and introduce new mechanics to battle than just a simple hold hate and hit hard. you proved my point.
i bet you those battles will have some very interesting mechanics that utilize all of them. of course better parties will be able to reduce it to likely 4 tanks, but you know what i mean.I agree, in most other games (that i've played), the 20 man raids usually only had and/or needed 2-3 tanks anyways. In FF14 a 24 man raid will have 6 (SIX!!!) tanks. Tbh that seems a little silly.