It be really cool if we able to build our own routes or maps it be really cool if you guys lets do this.
This PHYSICALLY can't happen due to limitations on certain engines + also I don't think DTG want people making routes with licenses they don't have which might scare away actual routes - albeit I think a DTG person talked about it live once.
Just like what lucasfor49 said, I simply can't done.. You need to bare in mind that TSW3 is also a console game so how would that work out which a small controller with limited buttons compared to a keyboard that has a wide range of buttons to use!