Market Districts are acting in a similar way to that of spaceports, terminals & shuttle ports in SWG in so far as they create a hub / bottle neck for players to have a greater chance of interaction. The ability to grow player owned cities and get to build functional structures like shuttle-pads brought with them the same player interaction opportunities for player built cities in SWG.
In relation to DU, apart from it not having the ability to have an automated in game shuttle service, though with Lua it is arguably possible. I believe the game already provides an organisation the ability to build there own shuttle pads and shuttle craft etc. Perhaps however there could be, at some time in the future an additional element added to the game that could allow two or more groups of territories deemed large enough to be cities, the ability to create an automated transport service to each other. Not necessarily owned by the same player organisation.
I do like the idea of some sort of attainment system related to organisational territorial ownership which provides levels of progression and there own item / element unlocks or mini-game mechanics. Geographically one based on traditional village, town, city etc would seem good. Additionally in the future a similar politically linked attainment system within player owned organisations may add another aspect to the game.
I would be up for a wipe that resets planets, however after experiencing losing a number of my construct blueprints, of my early creations after a pod bug, I don't like the idea of having to create some of my constructs completely from scratch, so I would be behind some way to return them back into a possible post wiped Dual Universe. There are also some amazing player made creations in the universe that I would be sad to see disappear completely. I can see that having all the talent points I have now would place too higher a differential between older players and new entrants, however I also feel there should be some way of reflecting the time and effort members of the community have put in. Either gaining a higher rate of talent point creation, a starting bonus in the form of percentage of pre-wipe talent points or an amount of skills that could be selected after a wipe would keep me happy. Or perhaps another way of rewarding the time put in.