No, the percentage is always calculated from the base amount. And no, not too bad.
I routinely attack people with much higher upgrades than I have.
Yeah, citadel's still worth it, at some point.
If you're wanting to upgrade to Citadel, and you're going to pay for it by selling dragonskins, it's worth it once you have 372 dragonskins. Just sell 31, purchase your citadel, and your DA will go from 13,094,400 to 13,094,400 (assuming, of course, that they're all manned by trained professionals
).
SA = 13,094,400 = 2560 * 5 * 372 * (1 + 1.75)
after citadel:
SA = 13,094,400 = 2560 * 5 * 341 * (1 + 2.00)
Citadel costs 5,120,000 gold, right?
Aran Taur