There's something missing from combat in FFXIV. As things are, interaction between players during combat is just like every other "holy trinity (tank/healer/dd)" MMO out there. Tanks worry about positioning and mitigation, DD worry about dealing damage without pulling hate, and healers worry about healing tanks and DD that take hits. All while everyone tries to stay out of puddles. You can find these kinds of challenges in tons of other games.

For those that don't know about skill chains and magic bursts: The previous FF MMO had a unique system that required groups to chain their skills in certain orders for maximum damage. These were called skill chains and magic bursts. Essentially, each player had their own "limit break", and when two players used them sequentially, it generated an extra spell that dealt damage to the mob - this is a skill chain.