Is it possible Maxwell is still in charge? Was thinking maybe he is and while on the throne the other worlds (hamlet/gorge/forge)ect) gained there own strength and was/or looking to free themselves from the power of maxwell/them?
I was also thinking if it possible that it was the fault of his own (specially with hamlet and shipwreck) with the help of Wilson .
Maxwell is acting maybe to gain trust/loyalty from the other. I wouldn't imagine he would get that loyalty if he was still on the throne. Charlie is acting in his stead as the new ruler (won't say she wouldn't want the power herself, but I kind assume she wasn't ment to be on the throne). Maybe it also to gain power and knowledge of the other kingdoms he (I assume) created.
I also assuming the events in ds all happened including future dlcs while Maxwell was on the throne, as the adventure mode was add by a demand to unlock maxwell.
I hope I made sense, I am quite dumb and if I am trying to rush things I might miss something's or totally mess up my point lol.