World border push out would let people place houses in the new terrain without leveling anything else, but I don't know how much space is available. LTB has started a train to the current border, which is cool. Then again leveling everything else can be a plus.
It's all rumor at this point, but honestly it sounds like maybe 1.15. might be a good time to reset the world, depending on which bits end up being true. Hopefully it won't be anywhere near as difficult to upgrade to, but I guess we'll see.