Spartan Death Star looks lethal, but is a huuuuge points sink (to be expected with a death star tbf), but I like the Tactical Squads, however what is the Assault Squad there for? 5 men who will be easily shot up and I doubt will do anything, your tacticals will clear and hold objectives, 5 assault marines aren't at all a threat compared to 13
FNP Death Company assaulting out of an impossibly fortified tank (which, don't get me wrong, I love), I just can't see the point in them.
Personally I would shave some points of that Death Company Squad by reducing the squad to 10, and exchange the Devastators for a Stormraven. Then take the Assault Squad out and you can afford another Death Company Dreadnought with Blood Talons, carried in the Stormraven.
2000 on the nose by my calculations, just my two cents.