I loved BR.... we all know I loved BR's.... I've had threads devoted to BR's...
And I am sad to see them go...
With that being said.. Skill chains would be incredible... however...

FFXIV as it is now, can not, will not, should not WONT get skill chains.... wont happen....
Skill chains CANNOT be part of a premeditated attack scheme....
Nothing that involves timing or exact positioning can happen with any consistency in FFXIV's battle system
Why?
Because you execute a weaponskill, a second later you see the MOBs HP go down, 2 seconds later you see yourself do the weapon skill and 4 seconds after that, everyone else sees your weaponskill
Try timing that? Not possible... Not with Crsytal tools current networking API....
You could luck into some Skillchains and even magic bursts.... But as a well thought out battle plan? forget it