Is there any possibility to have reverse() function in the PG core in the future? There are some implementation already like ie. this one: http://blog.frosties.org/post/2007/08/28/Fonction-reverse-C-avec-PostgreSQL I think author will have nothing against using his code as he published it on his blog. Not everyone is able to compile C function himself - while it's the fastest and I think many users would be glad to see it ready to use.
