Thanks for playing and the feedback.
The power of an item is supposed to go up mainly in line with the level of the item, so the basic sort by level is meant to cover this. Still, I can see the use of a sort purely by the power level. We only started displaying the power to the player recently, and should update the sort to fit.
We are working on a world map. We have the base outline in place, but are still working to refine it. The game is story heavy, so we are trying to work out some story details to make the world map feel like it fits. The map will also have details about each town you know of. For the early game you really only know about the area around your hometown up to the end of the demo. The demo leads up to your party leaving their home forest, and that is where you really start to have a larger goal than just go to the next town.
We recently updated the demo to try to give a feel for the later game with the big fight in the final town. The Demo Dragon gives you a big level up to a point well beyond what the main game would have you at for the final fight, just as that fight has enemies intended to be faced much later in the game. We had hoped to show off a bit more of the later content, but it probably dumped too much on the player too quickly, and we should have given the player a few regular fights to learn about the new abilities.
Thanks!