Is there any way that I can visualize the tiling texture outside the the 1-0 boundaries of the UV viewer or even a UDIM texture in the right place or is it an item in a wishlist?

That is what the UV Layout node is for. It allows you to dial in your UVs into a single tile 0-1 space or across several UDIMs. Make sure the display flag is set then press SPACE-5 over the viewport to see the UV layout. Drop down a ROP Output Driver after that to write out your object with the UVs.