Thanks for your comments. The tournament's not until late October, so I've got some time to playtest, and I'll give your reccomendations a try. I thought I'd tell you my reasoning for the choices I've made.
Downgrade him to a Shas’el with a target array. As for arment, drop 1 weapon, preferably the missile pod
Actually, a Shas'el with a targetting array, plasma, and Ion is what I had to start with, and I've played several games with both now. I find that the added flexibility and close combat ability well worth it.
For example, the last two games I fought were against Nids and DE. Against the Nids, I used the missile and plasma the first two to chip away at Warriors while staying out of the escorting Hormagaunts range. Getting into Ion range would mean I'd get assaulted by Gaunts, even with the assault jump move. Then he switched to missile and Ion to work the Guants over.
Against the DE, he used the missiles to shoot at a Raider (though admittedly he didn't kill it...), then the addition WS and A came in quite handy when he was assaulted by basic DE warriors. He managed to win combat, and the DE broke and fled.
Drop the disruption and take more Fire Warriors instead. SMF does it for free, after all.
Moving fast is indeed superior to the the disruption pod, no argument there. In fact, this is the first list I've put them on. However, moving fast isn't always garaunteed. I can garauntee that at least one of the games I'll play in the tournament I won't be able to hide all the tanks, and I won't get first turn. Additionally, the disruption pods will come into play if/when I get stunned. And they're only 5pts each.
As for the lack of fire warriors/excess Piranhas, the strategy I'm trying for here is sheer vehicle saturation, overwhelming my opponents anti-tank weaponry, and making anti-infantry and assault upgrades near useless. I've been using the Fire Warriors as distractions or objective takers more than for actually killing things. You called the Warfish overpriced, but I find it well worth the cost, though it might just be the proliferance of poor save armies I've been facing of late.
As I said, I'm not dismissing your comments. I will most definately try them out, I thought I'd just offer my explanations.