How about this idea.
Add bonuses for old chapters in new chapters.
So Chapter 4 will have a bonus town a bonus explorable area ( like Sorrows Furnace) bonus quests/missions for Phrophecies.
This will be just like heroes are at the moment you get them only in nightfall but you can use them anywhere, so you get this bonus in chapter 4 but you get to it in chapter 1.
This way we get new stuff in old chapters, which means people will go the the new stuff in the old chapter and Anet also gets paid for their work since we bought the new chapter.( Which has its great map and story in its own world)
If the new town/explorable area and whatever else is made interesting enough people will go to it.
This also helps to promote people to buy other chapters even more.
If you only have phrophecies and love the whole map, but been everywhere and done everything.
But dont want to buy the new chapter cause you dont like the map and whatever else it has, this can push you just enough to still get the chapter.
( i know your not gonna spend 50 bucks just for a new town, but it might help to push you to do it for the chapter)
People that buy the new chapter and only have the new chapter might consider buying the older chapter to find out what the bonus they have is.
This might push them to buy the old chapter, which equals more $$ for Anet .
The only problem i can see with this is people that buy the new chapter will whine that they can access something they payed for.
We happy

