Ok I'm just going to put this out there. I do not believe that we should add a new move to this Pokemon. I realize that due to the communal nature of this project, a lot of the inexperienced users who are joining will be vouching for a new move just because of the "cool" factor. However, the aim of the project is competitive after all. We do not need to add a new move to every single Pokemon that is created by the project. This should not become precedent. As a few people have already stated, see: hydrolphin, there really is no need for a new move on this Pokemon. It is perfectly fine with what it has. Both types, Dragon and Electric, have access to great attacks with high base power, Draco Meteor, Thunderbolt, and Dragon Pulse. Adding a new attack doesn't really help accomplish the "concept" of this CAP either. There isn't a single move that can take direct advantage of Shield Dust (unless you go off into some nonsense like a move that does physical damage and locks the target into their last move for 2-3 turns which might be of some use against like Iron Head Jirachi or something, but that is just a bit over the top).
With that out of the way, I'm going to give my opinions on a few things here.
Changed fire. Fire-type attacks aren't really overpowered and don't really harm any of the counters, so allowed.
Ice Punch would be acceptable methinks although this would be flavor because there really is no use competitively for Ice Punch on this thing. I don't really like Ice Beam because it still hits Rhyperior and stuff.
Earth Power. Well, I think this too should be unallowed. Magnezone can function pretty well as a check if this thing lacks a solid Ground or Fire type move. Once again, you can use HP Ground or HP Fire if you really want to hit Magnezone that badly. Earthquake unalloyed for similar reasons.
Focus Blast and Focus Punch (and I guess Aura Sphere for that matter) don't really have a place on this Pokemon when many of the possible counters could be taken out by these two moves. Yes, max SpA Focus Blast only manages 36-43% against standard Blissey, but all the other counters (bar Cresselia) take much more than that. I do think that Vacuum Wave should be allowed. It would be nice to have some priority on this thing (and just fyi, whoever said that priority isn't that great has issues imo), while not having the insane base power of Focus Punch and Focus Blast. Although I'll admit at the moment that I can't really think of any use that Vacuum Wave would have, I don't see any reason that it would be detrimental. In much the same vein, I think that Close Combat / Hammer Arm / Sky Uppercut / etc should be unallowed. Oh and Superpower. Don't forget Superpower for unallowed. Brick Break isn't going to do much to the aforementioned counters due to its low base power and the CAP's low Attack stat, so that should be allowed.
Ok changed my mind on this one after doing some calcs. Hydro Pump from 355 SpA Stat CAP against max HP Tar does only 43-50% and has a chance to miss, plus you can run bulkier tars so I think this is ok. No one will actually use Rhyperior or steelix to counter this so uuhhh. I am going to say Surf / Hydro Pump are allowed.
I don't see any thing that could possibly be wrong with any of the dragon-type special attacking options (meteor / pulse / breath / etc / etc).
Grass Knot should be unallowed because of the same reasons as water-type attacks. (And it kills Swampert which is a decent swich-in to non-draco meteor sets!)
I don't see anything wrong with Mist Ball but that is purely flavor and should be left to the latter stages of the process.
Things like Ominous Wind / Silver Wind / Ancientpower are fine methinks.
No reason to ixnay Shadow Ball that I can see, so allowed.
All Special Electric-type attacks (including Zap Cannon) are a go.
I think Flash Cannon would be a pretty good option (yes it does hit the rock-types that I just mentioned for se damage but it has pretty horrible coverage elsewhere).
U-turn should also be unallowed. Doesn't really fit with anything this Pokemon has going for it.
Extremespeed for allowed? It might be useful against random things like weakened Flygon or such, but I don't see this being too overpowered either. Can't really back this up with sound logic so you might just ignore this part.
I'm completely against Self-destruct and Explosion for obvious reasons (such as having the ability to instantly take out Blissey in the same way as Gengar).
Volt Tackle is going to be doing shit-all to the counters and it would be nice to have "some" physical options on this thing, so I'm going to say allowed. I'm also going to say Brave Bird should be allowed just because it helps with Celebi I guess while not being damaging to the other counters. Yes, I know this sounds weird but I don't really think this matters much! You can run about 100 Atk EVs and a neutral nature and possibly 2HKO Celebi after SR (but of course it has Recover so this is kinda moot??).
Dragon Rush for allowed because it's just a less accurate medium between outrage and dragon claw. Don't really see any issues here.