Soma, I've added this capability to Sanitizer. To use it, specify Sanitizer::translate as the second param to $sanitizer->pageName(), i.e.
$name = $sanitizer->pageName($name, Sanitizer::translate);
To make it work with the ImportPagesCSV module, edit the module file. Search for this:
if($name == 'title') $page->name = $this->sanitizer->pageName($value);
and replace it with this:
if($name == 'title') $page->name = $this->sanitizer->pageName($value, Sanitizer::translate);
I'm going to make the same change in the module itself here, but need to think a little more about how to avoid messing up anyone that's already using it. If someone is already using the module, then upgrades, it's feasible this could cause it to create new pages when it should be updating existing they had imported in a past version. I'll probably make it a config option or something.