Yes! Sins! Rebellion!
Enough of this "I smiteth thee with my +3 Schlong Replacement of Utter Boredom" and back to the cold harsh depths of space, where no one can hear you scream (in bed).
I look forward to burning traitorous traitors of traitor-y-ness with my Advent drone hordes!
edit: Speaking to the DLC business, it's been handled poorly by most of the places that currently do it -- Civ 5 anyone, or horse armor, or ETW's ten soldiers for ten bucks -- but I have a feeling that Stardock can pull it off.
The concept of DLC is great. A cheaper bare bones platform sold to everyone, with customizations added to it after the fact. Buy the elves and not the space ships and you've got a totally different game.
For me, $20-30 is the price range I consider acceptable for most games, and I have a feeling I'm not alone on that account. I have a feeling I'm also not alone in refusing to buy DLC for a game I won't replay, and refusing to buy DLC that only adds gear or cosmetic items -- that said, plenty of people will buy those things, and they're supposedly pretty profitable. But for a game that I do enjoy and do want to play, I'd rather have DLC and development of the existing game than a sequel, which will run worse (because MOAR GRAFIX) and need extensive bug whacking (because that's how things work).
I'd be willing to drop ~$10 on a content pack, and between $3 and $5 on a cosmetic pack. For a content pack to be worth buying it needs to add something worthwhile -- a new mechanic, a couple of scenarios, and maybe a few other things. If it's just a few maps, or just a few items, or just a new mechanic, it needs to be a little cheaper than $10. For a cosmetic pack, well, I can't really imagine buying that but I'm sure someone who is interested in that kind of thing could explain what they look for on that front. You could even regularly package the various content and cosmetics packages into bundles and sell them at a discount as expansions to people who don't like the DLC term. Finally, the DLC needs to come frequently -- once a month or so -- or I'll forget that it exists and will stop buying. I, like most consumers, have a short attention span, and you need to cater to it if you want to finger my wallet!
All that said, I do still expect regular free updates, and the sort of support I'm used to from Stardock. If a feature in the base game sucks, I expect you to rework it for free, not release a DLC that fixes it and bill me. Microtransaction based revenue requires a relationship built on trust and stellar performance -- much more so than the one time purchase model -- and if people don't get that sort of customer service you'll get a hell of a lot of moo and not a lot of milk for all your work on DLC.
With Sins of a Solar Empire, if you assigned a small team to release DLC for it every few months, and all they did was expand it as a franchise and a concept, you'd probably create a fairly reliable revenue stream that wouldn't need much in the way of management or overhead. Plus, they'd pick up a buttload of practical dev experience, making it a pretty good place to stick new hires. I'd also buy the hell out of it.
Oh, and you don't have to stop making DLC for a title just because a sequel came out. I don't get why video game companies do that, it'd be like Coke cancelling Diet Coke just because they also make Coke Zero. Pointless elimination of revenue from people who prefer the classic flavor! People like me don't buy new PCs more than once or twice a decade (yeah I'm not kidding with that number) and we play your old games for years. Keep selling us DLC on the old things because we're probably not going to move onto the sequels until they're old as hell.