Why would you want it to end?
I certainly don't.
Problem with todays consumer society: You don't want a story or an end, you want the same quality every day, all the time, on demand, forever. That's why some people are into one piece - they just get so used to watching/reading it every day/week or whatever since they're little, and there are people who outlived the ending... It's chasing dragons, man.
But ever wondered why breaking bad was so much better than one piece ever could be? It had a linear story, that was fleshed out and interesting but it didn't drag it out artificially.
Every good story has an ending in mind before it even started. If you keep going forever, you inevitably reach a ridiculous situation, or a drop in quality. Hence, why shows that run for 25 seasons are just not good any more. Take Simpsons S1 vs Simpsons S32(fuuuuuuck I just googled it... I wanted to say 20 something..).
Don't hope for the Dev to add to the story on the fly, let them think it through and then realise it. Not try to keep everyone engaged. 2-3 separate stories with a beginning, middle and end each are better than 1 very long story.
Desert Stalker needs to have a conflict, and resolve it. And the next installment of the series needs to work with a different topic, whatever that may be. A sequel in the future, dealing with new enemies, a prequel at the rise of the kingdom, or even further in the past at the fall of modern society, in this barely touched nuclear war that happened.
Does anyone remember this one game S.T.A.L.K.E.R.? Something like that maybe, but more story and interactive, less books of text boxes to read, more focus on action and less on sex scenes (meaning just the right mix, that Desert Stalker has so far.)
Or maybe just leave a materpiece behind, and tackle an entirely new and entirely different concept. I think we have adistinctive lack of pirate/sailing themed games. Especially ones with quality to them, that aren't sort of cartoonish and goofy.