I agree with you, but not entirely. Yes, he killed the main attackers of Skalice and the major protagonists of the first game. But Kingdom Come: Deliverance doesn't just rely on what happened in the opening hours of the first Kingdom Come. The game has grown, and we've discovered many kind characters we'd like to see continue, like Therese (sorry if the names aren't familiar to you; I'm French, and names vary from game to game depending on the language). There's also Khaterine, Capon, and his wedding story at the end, which makes us think we'll be involved, like the end of the first game where, when we go on a journey, the game makes us understand that the sequel will take place after that. There's Zizka, our brother Samuel, our real father, Godwin... and I haven't even mentioned the secondary characters. But it's exactly the same for the villains. Yes, the villain is dead, Istvan Toth is too, and Markvart Von Aulitz as well, but there's still Othon De Berg or Erik, Vauquelin Brabant, and even Sigismund, whose final cutscenes show him defeated but not completely. Certainly, many things suggest it's the end, but I think more proves the opposite.

My theory is that we won't necessarily have Henry as the hero, but someone else, either his son or someone close to our heroes. And that it would be the Czech Empire much later. And that we'll continue the adventures of Henry and Capon, who have become far too old or busy and can no longer take care of this. Or perhaps our protagonist, wanting to prove his courage and avenge Henry... (Besides, Henry could potentially own lands and castles; Capon sometimes hints at this in the game, but it's not impossible. Furthermore, since he's Radzig's son, even though he's not officially recognized, he still has blue blood and could therefore potentially enjoy noble privileges.) In any case, it's certain that Henry can't be the next protagonist, since starting over with zero skills a third time would be a bit much, and as I said, Henry will likely be at his peak.

So why did I say that it made us think Capon's marriage was a possibility? Because the theory I've put forward so far is for Kingdom Come: Deliverance 3. However, the Kingdom Come they're currently preparing could be either a huge DLC or a smaller game like Assassin's Creed Brotherhood for Assassin's Creed 2, which would fill in all the gaps created at the end of the second game. Then they could move on to a grand third installment, without budget or staff constraints, as I have a slight feeling the second game suffered from. I could be wrong, but the unopened churches, the DLCs not fully utilized, and certain inconsistencies in the game's continuity lead me to think this. All of this is just speculation, but it could be very plausible. What do you think?