Aaaand done.
<Destructor> is now on the gang customization list.
It seems to be somewhat buggy, which I'll describe below. Most of the problems appear to stem from the size of the vehicle, but there's a few other oddities.
It MAY have been a bug caused by another mod (which I deleted before further testing), but the first time I placed it onto the list, I changed all my gang cars to <Destructors>, and it seemed almost like no Saints were spawning AT ALL. Upon further testing it appears that the <Destructor> might tend to/only spawn on large (multi-lane) roads, which may be due to it being flagged in the system as a type of truck.
Later testing showed that the <Destructor> has a hard time navigating small roads, and occasionally will run over pedestrians who are simply walking on the sidewalk, despite being in the 'middle' of its lane. It will also barrel over street lamps and other objects without hesitation, and will crush cars that get in its way and do not move, after a short pause. This can lead to small (and one-sided) skirmishes breaking out between ZPD and the <Destructor>, which is an interesting side effect.
Another side effect which is odd is that if you have notoriety and the Destructor spots the Command CID, it will begin barraging it relentlessly, sometimes ignoring other enemies in order to do so, and often firing into crowds of civ peds. If that behaviour bothers you this probably isn't for you, as I don't know how to address it.
An interesting 'feature' of the tank is that you can use a low powered weapon (like, say, the rapid pistol) to 'tag' an NPC (including a *driven* vehicle) near it and it will begin firing upon said NPC, occasionally wreaking extended havoc while doing so, likely because the NPC you fire upon is tagged as hostile as soon as you assault them. This effect has a short radius, however. I doubt it'd be possible to trigger this while sniping, for instance. The <Destructor> will not fire on an NPC if you fire upon them with a superpower, at least from my testing with Blast and Stomp, and I assume if you shoot them with a weapon while Buffed it will still act as normal.
(Above: a Saint in a <Destructor> kicking the shit out of a garbage truck because I shot it.)
I've never seen a Saint get out of the tank, so it's possible that they won't aid you on foot unless you call them (which I did not think to test).
I would recommend if you decide to use the <Destructor> as a gang vehicle that you add other vehicles to your list and do not use only the <Destructor>, but hey, it's your call.
I'll upload this one as an 'optional' version alongside the v0.11 in case someone doesn't want the <Destructor> on the list. Just install it instead of/over the old one if you want to use it.