If the blokchain werent that huge, then I would try it out. Also you need to work on the graphics , it looks horrible. A 2d interface, but with a bit of shadows and 3d aspect models would look much better.
For example try rendering in 3d and then flat it out to have a better perspective camera view.
graphics are taken from royalty free archives, to do what you ask a graphic designer is needed, if someone have the skil and want to help he's welcome, btw i could use new graphics on my client, but it will only be valid on my client of course, i think this should be "client agnostic" but... maybe having custom graphics on different clients could be interesting
even custom maps could be used (i could crate a space theme in theory), the only important thing is to respect the "walkable/non walkable" tiles, all the other things can be changed
as a note:
talking about my client:
i don't have time to invest on graphics too actually, I was working on an isometric map time ago, but then left the work uncompleted because i had more important thing to implement