I tried learning some more Julia scripting and put this together. It generates XML files of SMBX content from PGE's configuration files. It needs the LightXML package if you want to debug it so all you need to do is enter Pkg.add("LightXML") in the console before loading the script.
Julia language: https://julialang.org/downloads/
SMBxml: https://pastebin.com/zwuyAkSW (Save it as a .jl file)
Right now what you see is what you get, but I'm still playing around with XML stuff and think this can be integrated into SMBX more in the future.