Raikov said:
In that case, please tell me you run with hounds.
Anyway, the XV88's only have access to the one-shot rail-gun profile, as opposed to the template one, IIRC. However, I am aware of their auxiliary weapon (though I've forgotten their profile).
As a player who doesn't use vehicles as fire support, I can say that your tactical thinking would need revising (not by much, mind you, but you'd have to be very lucky with your outflank rolls). And that reminds me, does the Tau have anything that can influence the outflank so that you come in via opponents LTE every time, because I wasn't aware of this?
On the occasions that I have played against Tau recently, I've always come up against massed Devilfishes and Hammerheads. Granted, you look as though you've got lots of feet on the ground, as the S5 high range will start to tell, but it just seems too defensive, and 20 Kroot don't make much of a tactical 'hammer'. You got any rail-rifles in there?
Purely my opinion, please feel free to criticise me back:
7 BA terminators + Sanguinary Priest + Chaplain = bullet magnet/anvil unit
5 Death Company + jump packs = fast moving bullet magnet/secondary hammer unit
10 assault marines = objective takers
10 assault marines + Chaplain = primary hammer unit
Surprisingly good against full-mech thanks to the obscene number of melta bombs and fusion pistols. Echelon advance and economy of force wins me my battles with this list.