I think the alt-art damage deck should be available to any 2.0 pre-order. If you could get a deck with a conversion kit, then the core becomes a value judgement on whether the extra minis, pilots, templates, rulebook, obstacles, dice, etc. are worth it.
Of course you can always pre-order a core, keep the damage deck, and re-sell the unopened core for probably 90% of what you payed for it. Or buy the new deck off of someone who is going to have an extra. The going rate for the small damage deck is probably going to be fairly low. If you're buying acrylic templates anyway, you only really need the damage deck.