until then, when i was organizing my empires cards just now i made a preliminary-preliminary power ranking of the cards. it is not only largely incorrect because i have known what all the cards are for, like, less than a week, and also the empires cards are hard to compare. delve is pretty obviously a better bet than, say, duchess, and also there's other stuff like, conquest is generally better than harem. maybe. and also, since debt, it is especially hard to compare the different costs; thus it ends up being something of an 'influential ranking'. but well, here goes.
1. donate (i'm excited to find out that this may be wrong; until then this seems to be the strongest dominion card)
2. advance
3. triumph
4. royal blacksmith
5. chariot race
6. delve
7. settlers/bustling village
8. overlord
9. capital
10. conquest
11. city quarter
12. archive
13. dominate
14. encampment
15. salt the earth
16. legionary
17. gladiator/fortune
18. wedding
19. charm
20. patrician/emporium
21. villa
22. groundskeeper
23. enchantress
24. temple
25. ritual
26. catapult/rocks
27. engineer
28. farmers' market
29. wild hunt
30. forum
31. banquet
32. crown
33. annex
34. tax
35. windfall
36. sacrifice
37. castles
...and castles are pretty influential. this expansion is on the high end.
if other people wanna try it, the thread title works pretty well for it.