what you are asking for op is unlikly don't forget Bioware dose not own the frostbite engine so they cant just give us access to it they would of signed contracts and things before using it you know legal mambo jumbo
I'm not sure it is legal mumbo jumbo, or anything as complex as people make it out to be. The following response is not directly towards you, Tharja, just more of an attempt to explain the legal mumbo jumbo.
When you go buy a copy of "Finding Nemo," do you expect Pixar to include all of their animation tools, many of which are not owned by Pixar directly and which cost thousands of dollars for each animator to be able to use? Would you expect that since you bought the content of their movie, that it would be easy and automatic for you to create your own cartoon content?
That's essentially what mod kits for video games are. And they were much easier to do back five or ten years ago, because nearly every game development company basically built their own engine, many times making a brand new engine for each game. That's not the case anymore - companies don't use their own in-house engines, nor do they use their own animation tools, or big reporting tools, or project management modules, etc.
A company can lease an outside engine, animation, sound rendering, light rendering, etc. tools and not only save money by not spending all of their resources making these tools, but in many cases have better tools. After all, Bioware is a game development company, not a animation software designer. Companies that make the creation of those tools their expertise will obviously be able to create something better than what a Bioware employee could cook up on their own.
In today's world of specialization and efficiency, it is ludicrous to expect every (or even most) developers to create all of their tools in house. It's easy to point to Bethesda or CD Projekt that include their own toolkits, but there are obvious drawbacks to using their own tools. For one, Bethesda's games are RIDDLED with bugs. This is in part because they are not going out in the industry and acquiring more cutting edge tools and bug reporting software.
As Allan stated earlier, Bioware COULD release a kit that removed all of the software that they or EA don't directly own... but that kit may be very bug prone (you can't just yank out code and have things run smoothly, any more than you could rip off someone's leg and not have other complications like massive bleeding). And for them to then go back and add the missing pieces themselves would cost lots of time and resources... and it STILL might not work well, since the team wouldn't actually be using this toolkit to make their games, so it's interface or even overall functionality may be incredibly sub-par.
Nothing malignant or overly technical about any of this, just straight business sense. Bioware is concerned with making the best game possible with the best tools possible, which unfortunately means they are unable to give the tools they use away freely to PC players. I'd like to see Bioware take steps to make the game more moddable even without a kit, but I'd still say the chances of their being a lot content on that front for DA:I is low.