Flash is an industry standard technology for game UIs. Scaleform GFx, which is Flash-based UI middleware, is used in all Unreal Engine games, all CryEngine games, all Gamebryo games, and so on. If you want to modify the UI for any game, you'll need to put in a lot more work than changing a few files. Look at the SkyUI project for Skyrim and Skyrim SE; those modders had to decompile and reverse engineer Skyrim's UI layer and SWF files. That's the way it goes. Welcome to modding!
Comparing Skyrim modding community with Divinity makes no sense. Skyrim has been around for almost 8 years, had tos of versions, and its one of the biggest and most active communities online.
I remember one thing I thought during the early access: The easier you make your game to be moddeable, the longer it's life will be, and the higher it's sales. Skyrim is one example (any Bethesda game, actually) But look to GTAV or Minecraft. If you give options, ways, possibilities then people will try to do things. And cool mods will appear. If you make the system limited and hardcoded from the start that doesn't make it appealing for no one to work on a mod that really changes things.
Basically it starts to feel like you need to become a full fledged developer. At one point I wanted to become one, then I realized how much I would not enjoy it. So anything I want to mod, if it feels like it's not modding anymore but instead developing, I stop right away. Leave it to the guys who already have long careers doing that stuff.
That's exactly what I mean. If it's almost impossible for the middle guys to do something, the community doesn't move, it doesn't make things. Or what about the "More than 4 players mod" that we all have been asking for? Is someone working on it? Or maybe the system limits that part so hard, that it would be so difficult to make that...no one is even trying?
Idea/Issue 18) For some levels it would be very helpful to have an option for NOT rendering (or cover with a black plane only visible from inside) what's outside the cameralock, sometimes you place one and even with that applied you can see some stuff that you shouldn't (floating stuff, level borders, etc.