Nested input module support in sitemap

[Upayavira]

Guys,

Is anyone interested in nested input module support in the sitemap? I 
want to be able to say:

{i18n:{1}.{locale}.xml} and have my i18n input module go and look to see 
if the related file exists. [NB. There's subtleties I haven't thought 
through yet in this example - but I'm not worrying about those for now - 
just working on the nested functionality first]

The current parser in the PreparedVariableResolver doesn't handle 
nesting, but I've got a design that has worked on paper, which I'm now 
coding up to handle everything that the existing 
PreparedVariableResolver does.

What should I do with this new code? Swap out the 
PreparedVariableResolver, replacing it with my code? Add a new version 
to run alongside for a while???

Ideas welcome.

Regards, Upayavira