Editing The Besiege Sandbox Map With Unity

*OK, yes i know this is a little bit much but just hear me out...*

I was looking into using unity to edit the besiege map, now this would not only add on to a "level editor" but it would also be a great new mod thing for the modding part of this form. I don't know if this is even possible but if it is, i think everyone would enjoy it!
My progress so far...
I have currently not opened the "level 0" or any other level files located in the besiege files. If anyone else would like to help me figure out what i should be doing differently or if this is even possible, i think it would be VERY worth it! Thx for the help :D!