Did you know that the current Battle Regimen has SIX effects not just one that you mention? http://lodestone.finalfantasyxiv.com.../battle02.html This is a SE link (click on battle menu then Effect-Inducing Tactics). Many persons do not know the six nor do many of them understand other effects like incapacitation- several tier II weaponskills that "maim" the mob further reducing its TP generation and lengthening its TP moves.

Here is a combo you can try on Aldgoat Billy. you will need at least 2 persons-preferably a LNC and PUG or MRD- then you will do the following skills in the regimen: 1) Heavy Strike/Heavy Swing ---> Moonrise followed by 2) Skewer II -----> Concussive Blow II/ Skull Sunder II. Assuming the both regimens hit and you are fortunate to knock off the Billy's Horns, you would have effectively rendered the Billy's TP moves null. Because a normal attack to weaponskill BR causes Regimen of Constraint, which reduces TP generation for mob and lengthens TP moves cast time, and Moonrise also reduces TP generation, and finally, if you knock the horns off, incapacitation also lengthens TP moves cast time and reduces its attack potency. That was just one tactic that is viable and quite useful. It can be utilizes also on Skeletons (Good SP).

There are several different BR combos that can be used to augment existing weaponskills effects/magic effects to cause CRAZY things to happen.

I will give you one more for for strong dmg. you will need 3 members: preferably 2 mages (con & thm) and one melee, or two melee and one mage.
First scenario
BR= Light Attack + (spirit or phantom) Dart-- this cause regimen of trauma, lowering magic defense
then you stack element dots pertaining to your next BR magic spell--example shock.
Now everyone buffs
BR= Elemental spell (Thunder)+ Thm spell (Scourge)+ weaponskill (Skull Sunder)

This combo as discribed will give you a big boom even at lower levels.

Second Scenario
BR= light attack + light attack + (spirit or phantom) dart---this will cause both regimen of ruin (defense down) and regimen of trauma (magic defense down)
mage (if con) stack elemental dots
everyone buffs
BR= WS+ WS+ magic (Thunder)

With practice and team work you can conduct the combos regimens in 7 seconds of obtain the requisite TP.