Mighty Shot (3 Ranks early, and a powerful Talent)
Dual Shot (1 early, not really sure how this fits their combat doctrine)
Iron Discipline (4 early)
Master Orator (Why? Not a Water Caste, so not really appropriate)
Free Gear with certification..Where is it coming from? Drone rules are particularly broken. Free experimental power armor with one talent.
Into the Jaws of Hell (4 early, is a Rank 8 talent they get at rank 4...should they be as good of leaders as a RT?)
Probably shouldn't get such easy access to Scholastic Lore (Tactica Imperialis), as it would be Treason to teach it to them
Pathfinders get drones at rank 3 and stealth armor at rank 4. The wording leaves me to think that the player has infinite replacements 'on the ship'.
Veratile Shooter is perhaps too strong, as any accurate weapon acts as a basic weapon...including heavy and vehicular weapons
Those are some of the issues I see with it based on a quick look through. If all the player are Tau, not a problem. Otherwise it could cause problems as well as the fluff problems of there being no Tau infrastructure to supply such a character in the expanse. Tau are also less likely to be accepted than Eldar or even Orks, as they are known to corrupt worlds away from Imperial rule.
Now THIS is awesome advice. Not only is it giving helpful "how to" advice for making a PC I want, it is telling me what specifically is broken so the GM and I can work on it.
Thank you! I will take all this into account and move skills/talents around accordingly.