New dev blog about dominion, more precisely upkeep and upgrades.
http://www.eveonline.com/devblog.asp?a=blog&bid=714All in all it is looking quite good now.
They have reduced upkeep costs a bit, maybe too much for the "jammer+bridge" combo, and upped the income possibilities with increasing to 20 anomalies at lvl5. They should be about as profitable as lvl4's.
Also the at max upgrade of "ore prospecting" it gives 5 grav sites similar to the ones (I assume) high end wormhole space so should be good belts with high ends and such in large roids. They respawn every downtime.
Archeology/hacking site upgrade isn't a fixed number but a probability increase and the sites you find have a 12h respawn (how this works for something that might or might not be there I'm unsure)
You can also increase the other plex chances (both to find and the level) and the chance of finding a wormhole.
All in all it is looking quite good in my eyes. The only drawback is that there might be a significant risk that it won't change anything in the availability of space to actually own.