First of all, I like that I made it on your list of heroes... (while I'm more of an antagonist really, am I not? XD)
Oh, and heroes is actually spelled with an additional 'e' ^^
As for your interface, I think I'd like the values of the categories actually right-aligned, instead of sitting behind the words. That is also easier to do when you plan on seperate them in color (which you should).
Your problem is more on the useability side, though, I figure. So, lemme try to get something together at almost 3AM in the morning XD The think most apparent to me is that you show "castle.png" instead of the actual icon... that doesn't make much sense, however, seeing the actual filename could be important. Make sure the space you reserved in the window is enough for long filenames, though, as atm, it looks like you wouldn't even fit "Large_Village.png" ^^
As for the values, your main problem with buttons would be that you can only edit them in single steps, meaning if someone wants a map at [400, 380], he's looking at your window for quite some time and you also have to worry about making the experience a little less torturing XD
No, but what I'd like to see (not only because of that, but in general) are 'text input fields' for your Text Values. You're using Glitch's keyboard script, so that shouldn't be a problem, and if you make the right graphical appearance for that, it shouldn't be a problem for users to get it. You can then get rid of the edit buttons altogether, as clicking in the respective field will be your edit button. That gives you more space for the name box which is text-only, as well as allows both text input as well as pixel-by-pixel steps for smaller changes by the +/- keys (which you might wanna exchange for the compact, Windows-default up/down arrows, however, that's not a necessity - trying something non-standart can perfectly work out as well ^^).
Then, you definately need to change your colors. I believe red isn't the text color you planned on, however you could have black in your head actually. Let me tell you it doesn't work with the dark-blue background, so you definately wanna change either the font color or the background.
I'm confused as what the direction flag is... neither towns nor icons should have a direction as for my understanding, so I wonder what it's for. If it should be the icon, making a dpad-like interface around the actual icon being displayed might be fancier, easy to use/get and overall space-saving.
I also wonder what map ID and switch are... I figure switch is the switch ID of the switch that has to be true for the item to be displayed on the map, but I totally can't figure out map ID... can you enlighten me?
Last but not least, think of the people who might exit the window without saving - you definately want to include a cancel button here ^^
I hope I could help, but deciding some things is pretty hard over a concept with so few usage notes on it... meaning i'll definately check out your released product for further advice if you want me to
