Your HQ is terribly expensive, I'd cut it down to 5-6 genestealers and only give them extended carapace, as for the broodlord himself he really doesnt need any upgrades against tau.
The scuttlers on the gaunts are very expensive, but if you're going to infiltrate your broodlord, you might need them.
Personally though, I'd drop scuttlers and get zoanthrope with warp blast and synapse, it can babysit the gaunts untill they reach the broodlord, which shouldnt take too long with fleet of claw, plus the warp blast is great for taking down suits.
Also, I'd get some more gaunts, perferably hormagaunts as these very fast critters will tear firewarriors to pieces and they dont need any upgrades to do this. The alternative is more spine gaunts so you can swamp him.
The lictor is a great choice against tau , if he can make contact with a firewarrior unit, its as good as dead, same goes for everything tau, except maybe kroot herds.
As for the list being reasonable, using a broodlord in 500tpts games might seem a bit cheesy until one looks as his cost (incl retinue) and the fact that he cant fleet of claw, I'd say he's the worst tyranid HQ against tau.
I would have gone with a unit of warriors instead, you could get around 7-8 good warriors for the cost of your broodlord and retinue, I wouldnt field more than 4 warriors though, using the rest of the points on gaunts and a zoanthrope.
The scuttlers on the gaunts are very expensive, but if you're going to infiltrate your broodlord, you might need them.
Personally though, I'd drop scuttlers and get zoanthrope with warp blast and synapse, it can babysit the gaunts untill they reach the broodlord, which shouldnt take too long with fleet of claw, plus the warp blast is great for taking down suits.
Also, I'd get some more gaunts, perferably hormagaunts as these very fast critters will tear firewarriors to pieces and they dont need any upgrades to do this. The alternative is more spine gaunts so you can swamp him.
The lictor is a great choice against tau , if he can make contact with a firewarrior unit, its as good as dead, same goes for everything tau, except maybe kroot herds.
As for the list being reasonable, using a broodlord in 500tpts games might seem a bit cheesy until one looks as his cost (incl retinue) and the fact that he cant fleet of claw, I'd say he's the worst tyranid HQ against tau.
I would have gone with a unit of warriors instead, you could get around 7-8 good warriors for the cost of your broodlord and retinue, I wouldnt field more than 4 warriors though, using the rest of the points on gaunts and a zoanthrope.