It's "Rachael," by the way.
What are you talking about? I totally got that right the first time *whistles nonchalantly*
Yeah, the main issue is whether or not this bar fills or is depleted. If it fills it could be a Limit Break-type system, if it depletes, then that is a different story. Lufia II had an interesting system where getting hit by enemies filled an Item Points gauge, then the equipment that you had had certain abilities that expended anywhere from 5% to 100% of that gauge. So, you had to choose your equipment more on what abilities it let you use rather than its stats. This is not likely to be anything like that, but maybe it fills and is spent in the same manner.
Initially there was talk of the Top Bar being MP. But why then would the Fighter Characters have the same MP total as the mages? I think we can base our assupmtions on the idea that this is not MP and is some type of Ability Points gauge.
As far as "Great Defense." This could be interesting, maybe it is a command that raises the Dodge/Block and Counter Attack rating through the roof, allowing tanks to deal significant damage while defending if they get attacked.
"Together" is self-explanitory. At least we know Unites are making a return, in whatever form.
Tactics could refer to different Formations like in Suikoden V. That could be very cool if done right.