Are you me? This is almost my exact situation. Only difference is that I convinced them to PF2e from The Dark Eye 5 (DSA5).

There are other alternatives too, like invidious. The yewtu.be instance works decently well for me but limits to 720p I think. There is a list of all running instances somewhere on the github iirc. There’s other instances that allow full HD, just have a search and you should be able to find one.

Same. At least with Deus Ex I have some hope left. Iirc the studio (Eidos?) was sold by Square Enix and the new owner may have them work on a new Deus Ex.

If you like those kind of games it may also interest you that Dishonored 3 being planned was part of the leaks last week.

DotO is basically a huge DLC for Dishonored 2 and not a main game. It’s still great though and has some fantastic lore. It also released in 2017, so a bit early for a spot on this list.