+1 for forcing everyone to wait
if you allow different options it will turn off newcomers since then game won't have as many people that will watch CS in the future.
if you want to farm? tough luck, either find a group of like-minded or bear with it.
If like you said everyone will get tired of the CS, then eventually everyone will skip the CS.
running it 50 times doesn't give you the right to be an a-hole, no matter if you have 7/8 people, if you want CS free, find that 8th person.
FFs have always been story driven which is why so many people joined the game back in 1.0 and now 2.0. If you want to play something story-less go play any other korean MMORPG.
The only problems about dungeon are ppl clearing every single mob when clearly you can skip them and still get the map achievement since dungeons don't even yield good exp. Also tanks that can't tank, healers that can't heal and dps that constantly interrupt a target that has been marked not to attack because they are cced.