Even the Chief has more tactical insight than Crashdown. So I'd go for:
2 piloting, 1 leadership, 1 engineering, 1 leadership / tactics.

Thematically, I too question the big leadership and tactics draw for him, but I guess 1.5 of each is not totally off the wall.

I actually think the OPT you have for him may be too powerful; if Crashdown is human, the humans are pretty much guaranteed to never have to worry about raptors getting destroyed, and that's pretty big. I might consider limiting it to just his turn, or when *he* risks a raptor (which would still allow the re-roll when he's XOed).

My biggest concern is that his OPG might be overpowered if he is a Cylon... what about removing the "damage galactica" part and changing the wording slightly:

"Action: Once per game, activate Heavy Raiders. Then, you may destroy all Centurions on the Boarding Party track."

I worry that his OPG makes centurions essentially totally meaningless if he is human. Centurions are already not the biggest threat, but if the Cylons execute their plans well, then the centurions *can* be a serious problem. That, however, depends on devoting Cylon actions to them, and if Crashdown just swoops in and makes that irrelevant, that seems a little overly powerful, no? And, I mean, all he has to do is use it when the board is clear of heavies, and that's basically just a "clear the boarding party track" OPG, which seems kind of nice? That is mitigated (a little) by the CFB, at least.

So, it's very situational but potentially very powerful OPG for the humans... but not really that great for a Cylon? That's probably my main problem. I mean, if you compare it to other OPGs, one damage doesn't seem like a whole lot. Although, if you paired it with the damage reveal, it could pack quite a punch.

I imagine he may never use his OPG, even if it it rather powerful. It largely negates Cylons trying to win through Centurions, so I imagine they wouldn't even try, removing the need for him to ever use it, and even reducing its effectiveness as a Cylon.

How about this:
Action: Move all Centurions forward or backwards 1 space on the Boarding Party track and place one Centurion at the start of the track or remove one Centurion from the track.

How about: Remove X Centurions on the Boarding Party track. For each Centurion removed, two characters on Galactica (other than you) have to discard all their skill cards.

Flaw: When you give an Executive Order to another player, you may "order" him what to do. If he does not, you loose 2 random (or leadership?) skill cards.

Here's an alternative OPG ability, building on Jason's 'Numerous Discoveries'.
Before the Admiral draws Destination cards after a jump, draw the top 3 Destination cards. Put 2 at the bottom of the Destination deck and 1 on top.
Gives you a lot of control over a single jump, be it because you're human and you (a) don't trust the Admiral (after all, who does?) and/or (b) you want to guarantee a good jump or you're cylon and you want to sabotage the jump. Note that it doesn't put the jump completely in your hands, the Admiral may still choose the second card they draw.

I think for an OPG it's a bit soft, especially because of the second destination card. Change it to: Once per game after you jumped, instead of the Admiral you may take the top 4 destination cards and choose one.

Or rework it to a Passive perhaps? But I realy did like the Raptor CEO passive you already had! One other thought: give a 'Numerous Discoveries' OPG to Racetrack, everytime she stept into a Raptor, I knew something was about to happen