Ha! Well not too much response here...
Anyway @Pedro: So I do not have too much time to work on an updated template. But I have added a somewhat updated template file to my emacs-lisp repo here <org-babel-execute:template> along with some handy tips <https://github.com/dalanicolai/dala-emacs-lisp#ob-templateel>. Then of course you can further just check out examples of other ob-....el files. Hope this is useful.