Where is the finish of Game?

My concerns revolve around 4 big subjects, and dozens of smaller loose ends.

1. What and who created the Scourge?
2. Who created the Remnants and where they are?
3. Who are the Kett and what they are after?
4. Controlling the Meridian ... now what?

Rest of stuff:

• Quarian ark whereabouts (which we can miss, if never listening to the transmission)
• Impacts upon our choices: friend/enemy Tchuchanka, military/science Outposts, save/not the Moshae, save/not other Pathfinders, who's the Initiative chosen embassador
• Lingering in orbit Architects' demise/salvage
• Knight's cripple son's revenge
• Charlatan: next chapter
• Benefactor: hoping it's not an Illusive Man's clone
• Other less impacting characters you decided their fate
• Curing our mother
• Exaltation: all kett leaders use it of just the Archon?
• More memories to unlock? A flashback into Alec's past and learning from it
• How will the siblings interact thereon in
• Eleedan's sand worm: optional boos in a DLC?
• How Alec got hold of Geth intel?
• Will the geth make an appearance?
• What of that Ancient AI and her context?
• Liam going to school to learn proper English pronunciation
• Will Pathfinders be the focus now that Meridian is under control, or will they move into a militarized initiative due the lingering threat of the kett and protect their cluster?
• Will Addison's face cease to be tired by then?

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Also, keep in mind that there's been hinted that Andromeda may stand alone, not as a Trilogy. They can very well go into time like 10-20 years to start a trilogy, if they don't kill the franchise with lousy decisions and priorities.