To put it simply, I will be trying to make a reimagine of Opera GX by making Opera ZX which is a mod. Imagine Call of Duty Zombies (to the people that know this series) if it was reimagined as a browser. This mod is already finished and awaiting to be put in the store as the first testing mod not made by the offical Opera GX. What I'm saying is, this is meant to be the first custom free (if mods do tend to actually cost), and testing-type mod in the store.
Here are some images to give you a feel of what the mod will be like...
Keep in mind that this is not completely done as some assets and music still need to be fixed (some files being too loud, quiet, annoying, too many, too little, etc...)