the inline plugin's sorting is plain lexical, thich may not be appropriate for page titles if they have numeric components. the Sort::Naturally perl module provides an algorithm for that.

there is a patch 55b83cb7bd1cd7c60bb45dc22c3745dd80a63fed attached that makes the inline plugin use Sort::Naturally if sort is set to "title_natural".

the current patch uses require Sort::Naturally, so libsort-naturally-perl does not become a dependency; it might be worth suggesting, though.

See also: inline: numerical ordering by title (I probably prefer your approach..) --Joey