Managing GNOME shell extensions

I didn't say that JS was any good, just that there are more resources directed at making it better and that it is _already_running_ and needed in Gnome3. Perl, Python (unless you use some rinter applet), Java etc are not.
So my wish is still just JS extentions nothing else (maybe C and Vala). Everything else is not needed and lets the user experience on resource limited devices deteriorate faster than you get upset when somebody says anything against your favorite scripting language.