... well, I will say my favorite solution (that, uh, I'm not sure I've ever actually seen implemented, closest being maybe something like Distant Worlds or Dominions surrender-to-AI thing

) to map painting, especially end-game you-must-clean-up-your-mess-to-win busywork is to just... automate that shit. Really heavily. Give me a button on basically everything of note that I can press and say to the game's AI, "I don't want to bother with this anymore, you deal with it." If something's annoying me, personally, let me have a way to slide it off the screen and stop thinking about it. From what I understand it's largely a time-inefficient pain in the ass on the developer's end, but... y'know, I'm not on that end, ahaha.
So far as continuing to make things interesting post blob, well, if you can't give me opponents anymore start letting me make my own problems. If I'm a world spanning ork horde, by the dark gods I should be able to unleash an undead apocalypse over trivial nuisances and then have to figure out how to deal with the runaway bone buddies brigade that just took over the planet's southern hemisphere. We're on the DF forums, of
course most of us here want to dig too deep in more settings than just this one game. We should be able to pester our advisors until they rise up in rebellion, then defect to their side and crush the once great empire. So on and so forth. Doesn't apply as well to less fantastic settings, but they hold negative interest for me in regards to strategy games and I basically don't play them, so :V
Alternate take on that one is almost Spore like (or, perhaps more accurately, like a cultivation novel), where once you blob and take over the world
whoops turns out you're just one tiny planet in a very active galaxy, guess what you get to do now :V
... and then you take over the galaxy and hey, you're not the only galactic superpower. Oopsie, conquered the galactic supercluster, but wait, there's more! Rule the universe with an iron fist and some idiot magitek engineer cracks open a hole to another.
It just keeps going. That'd probably be pretty neat, too. Hell to develop, but neat.
Yeah pretty much. In my project I tried to design a fun imperfect information system. Aside from mechanical challenges you always have to consider whether players of traditional strategy/war games would enjoy it.
One thing it's good to remember sometimes, is that you don't necessarily have to
care if players of traditional strategy/war games would enjoy it, especially from the perspective of coming from said games.
First and foremost, plenty of folks that indulge in that kind of thing would be perfectly fine with some degree (even a lot) of innovation or different takes. Some of us just really want something
other than modern military or mundane medieval cruft, ferex. Beyond that, there's more players out there than of traditional strategy/war games (rather a lot more, from what I understand of the proverbial market, even). Don't worry too much about stepping on stodgy, hidebound toes, just worry about making something that works.