I don't want to suggest a technology, but the URL shortener on wdqs has been EXTREMELY USEFUL to me and it would be major bummer to lose it. I recently taught a class and used a variety of examples of SPARQL queries over wikidata. Having that shortener made it much faster for me to assemble the lecture and give people easy ways to get to those queries.
I could have used another one on my own I guess, but the current implementation is much faster and less error prone when dealing with monster sparqling urls...
please find a way to keep it
-Ben