I tried this list last night to disastrous effect. I was absolutely slaughtered by my Daemon opponent (whom I beat last Saturday) and also lost to an Ork opponent. I won't post Battle Reports this time because all of the pictures came out fuzzy.
I hear you. I really needed something with more fire-power than the Tactical Squads. I put two Turns worth of shots from three different units into his Bloodcrusher squad and couldn't do more than killl one of them and wound the others.
It isn't working all that well. I wanted to use the model because it looks so cool, but he doesn't have enough shots to do much against a hord unit, lacks the AP to hurt an Elite unit, and lacks the Strength in his guns to really threaten any vehicle other than Ork Trukks! I don't think I'll continue to use that configuration of Dread weapons.
I made a serious mistake against the Daemons by disembaking all of my Tactical Squads to try to shoot up his first-turn units. All I succeeded in accomplishing was killing his Daemon Prince. Second turn, his Flamers started showing up. My squads were packed so tightly, he scored 24 total Wounds on three squads with a single Flamer squad (three templates!). Those things disallow not only Cover Saves, but also Armor Saves. My Tactical Squads had no Invulnerable Saves, so they were pretty much decimated. I'll have to learn to keep my units in their transports until those Flamers have been dealt with one way or another.
Against the Orks, I had horrible luck on the rolling on the vehicle Damage Results table. My Vindicator rolled penetrating hits twice, then rolled ones each time to only Shake the target. My Meltas Tempest Missile Launchers, and Autocannons did the same thing about eight times during the battle. One mistake that cost me the tie was that I didn't think about assaulting his Battlewagon with my 2x T-L AutoCannon Dread after shooting at it on the last turn. I forgot that I'd auto-hit it, attack it's rear AV of 10, and even a 6 strength would have a good chance of doing some damage with three attacks on the charge.
Vulcan's abilities helped me hit on several occassions, but they just didn't seem to make much of a difference. However, I wouldn't have had any opportunities to use Combat Tactics in these games anyway, so who knows?
Oh, well. That's what these games are all about: learning lessens now so that I don't have to learn them for the first time at the tournament.
Thanks for your suggestions fellas. Looks like I'm back to the drawing board.