Which ones would you like to see?
I'd want someone to do a game like The Guild - it was such a great idea for a game and sequels just sucked while add-ons to them were simple rip-offs adding nothing, fixing close to not bugs and charging lots of money for them. They murdered the series basically and then they stabbed the dead body repeatedly when the police was on site already.
Not sure you ever seen it. It was a game where you'd play a dude of one of a few occupations sometime in the late middle ages. You'd "be" the head of a family and would have to plan a career and a future for all your kids and whole clan entirely.
It was an RPG where your character could just work the canyon crushing stones all day, working crops on his farm, serving beer in his tavern, feeding cows like in Minecraft - or use family and employees to do those jobs, but he could also start politically influencing the city competing against other AI families or just focus on dominating trade and crafting in the city flooding the market with own goods and buying out buildings in the city one after another. MMO/multiplayer options for expansion would be huge in a game like that - but even in single player a game like that would be fun and most importantly very unique.
I bet there's a lot of people very angry at how The Guild series was handled and those "orphans" Paradox could adopt if they made a similar game - since noone else seems to be willing to expand into this kind of a hybrid game. There's also plenty of Anno and CK2 fans that could be lured in.
Even if you don't pick it for a separate game, I think it'd be good if Salem devs took a good long look at this title while their game is still at design stage. It really had a ton of unique ideas in it that noone else ever reproduced in another title.