Angryman here, for all you Tau fans out there (you know who you are)
Here is the new FAQ for the Tau Empire, with all the web chatter about a new codex currently circulating and now this, could we be seeing a 3rd Tau codex soon?????

The Kroot have a lot of stats that makes a lot of Tau players never pick them. They have no save, their low leadership and low toughness BUT they have a lot of rules that you give you pause for thought when you next work out a Tau list.
The kroot are better in combat than their Fire warrior counterparts. Their Kroot rifle means they count as having an additional close combat weapon and the ability to take kroot hounds in the same squad enhances this further.

The hounds have higher initiative and more basic attacks, they cost less in points that a Kroot warrior and you can take up to 12 of them in the same squad.
There is an option of a Kroot Shaper
This guy is the veteran sergeant of the Kroot warriors, he comes with a saving throw (albeit a 6+) but gives the squad a higher leadership and has triple the attacks of a normal Kroot warrior. He can also take either a Tau pulse rifle or carbine.
Next is the heavy assault weapon of the Kroot, the Krootox

These guys mount a long range, S7, rapid firing weapon which is perfect for high toughness infantry or light to medium vehicles. They are quite good in close combat too. With S6, W3, A3 they are a really handy addition to the Kroot squad.
Taking all these extras to your basic Kroot warrior squad will cost points that you may think will be better spent elsewhere, but with these additions you are giving your Tau army a close combat ability that can hold objectives, is really difficult to move from cover and with the amount of models in the unit it will survive enemy fire and close combats.
That's it, I hope you think twice about ignoring this useful unit and take it to amaze and dumbfound the opponents of the greater good.
Please feel free to comment.