SCs only became less efficient years after additional content / gear / level cap / badass Weaponskills were added. Back in my day, we would time BLM Ancient Magic with our SC's to burst mobs for like 50% of their health. It wasn't until about 6 or 7 years after release that skill chains became inefficient. And just because they lost their balance doesn't make them a bad idea. They could be implimented into FFXIV in another form. The idea here is to present a team-based limit break which requires some skill/knowledge/timing to maximize efficiency over the current "DRG/BLM/MNK/SMN PRESS LB BUTTON K THX" system.