After reading through the last few months of posts it seems a few things need a change.Here is my "in a nutshell" list of proposals/changes in regards to the Tau list(my views and reasoning will follow)
Fire Warriors 4+ FF, 6+ CC, 15cm Pulse Rifles AP5+. 8 units for 250 pts.
Scorpionfish move it to the collector's section and replace it with a:
Fusion MW Hammerhead support group
[b]Swordfish remove it
Sniper Drone team remove it
Tau Jet Pack rule Just replace it with Hit and Run.
Sentry TurretsMake them 25pts. each and 1-3 per 3000 point game. Make them a standard unit BUT with no activation.
Barracuda make it a focussed CAP formation. Remove AA on Ion Cannon and give it 5+ armour to reflect it's correct agility (somewhere between Eldar and Imperial Navy). Another option is to make them a 2 plane formation to reduce cost. I'm not sure which one I like the best but I think I lean towards the former.
Crisis Suits return it's MW FF
Auxilia Implement Moscovian's proposal regarding selection
Vespids move them to the collector's section
Moray increase cost to 350 each
Reasoning etcFire Warriors - they aren't popular which is a shame. While I do like their current 2-shot incarnation I think they need to be that menacing anti infantry force that Tau are in 40K and we have to break from this "have to be weak in engagements" design for this particular unit - just so others might see them as usable. And hey, if we change them to 4+FF and people don't like them, well at least we say we tried all avenues of design.
Scorpionfish/Fusion HH - Sure, it's a non-canon unit and there's no miniature, but can be converted.  I use one myself and find it does very little but some find it to be over-present in army lists (no numbers as to just how many people feel this way). I would support it's removal however for a Fusion MW Hammerhead support group to help fill a gap in the list.  Tau are fairly short on ground based Macro Weaponry and TK ability. The FG-HH would go someway to filling that role. We should at least try this arrangement to see if it helps balance any. If we have to keep the Scorpionfish in any incarnation move it to the collector's section.
Swordfish and Sniper Drone team - These units have always seemed superfluous. The Swordfish because it just seemed that a Hammerhead was really just as good; and the Sniper team because it just seems tacked-on to the list because of new gear from 40K. Heck we don't need to add more to the list!
Tau Jet Pack Rule - well, one of the most contentious rules for Tau that there is. I would like to see it scrapped for the plain-old Eldar Hit and Run rule. It simulates to some extent what the Crisis Suits generally do and also doesn't make them so diffcult to deal with as some here have said. It's fairer to both sides really IMO. It's also an established rule which would cut out a
new special rule.
Sentry Turrets - These are difficult to understand by some. I personally have only ever had one issue arise from them rules-wise and that is the fact that the opponent can place his garrison troops right on top of them (due to placement) in his set-up due to them having no ZOC. It was weird and we didn't like it. If we make them easier to understand maybe people will be less unhappy to see them.
Barracuda - A few people have mentioned how Tau have "everything" well let's focus at least one unit a little more instead of it being an all-in-one aircraft. I would like to see the 'Cuda become the airpower force it should be. Sure, some may argue that it has seeker missles in the fluff, but in all honesty the 'Cuda feels like it's over-armed. Why not leave true ground attack to the Tigershark? On the armour boost, the Tau aircaste are born in their planes, they should at least be an agile unit type. Eldar have armour
and agility for a 4+ aircraft. Is it really that much of a leap for the Tau to have 5+ armour?
Crisis Suits - gimme back my MW FF!

I think CS mentioned he was reviewing this anyway.
Auxilia - if folks really want to use auxilia I really like Moscovian's idea.
Vespids - again, another "unit creep:40K codex" formation. They aren't necessary and are just another unit added to a list already fat with unit types as it is. To the Collector's section with you!
Moray - It fills a niche. Regardless of what some think, it truly does. The problem I see with removing it as some have suggested is that the Tau really are low on ground based TK weaponry. Fighting Titans is a ridiculous endeavour in my experience. To kill 1 Reaver-type titan I once had to dedicate 6 formations in one turn and even then it came down to literally, the  final dice roll of the game!
Unless you go A-X-1-0 heavy and these are fragile in my experience Tau need the Moray. Also it would be nice to have a
choice of whether to use air or ground support in the list.
Bump up the price of the Moray to 350 each and it becomes impossible to include anything more than 2 in a 3K game. Personally I'd never use more than 1 even at 300 points, but that's just me as I try not to be a cheezy git. Hell, if necessary to stop the cheese, put a force restriction limit on them be it 0-1 what-have-you etc etc.
Well, that's my view anyway. Hopefully, this might go someway to giving those who are unhappy with the list a different outlook on it.
Shoot it down as you will gentlemen.