It can be solved with party chat spam (though I don't really like spam)

/p {Battle Regiment} {Regiment of Ruin} defence down 3s. (Or any random timer adjusted to party compatibility)
/wait 1
/br on
/wait 1
/ac *normal attack/magic* <t>

and

/p {Battle Regiment} {Weapon Skill} {Ready!} 3s.
/wait 1
/br on
/wait 1
/ac *weapon skill/magic spell* <t>

You'll have your FFXI feel of skill chains.

Edit: Might as well try it, screw around with it and have some fun before they take it away. Who knows, it might help people burn through Ogre and Batraal on speed runs ^^