Seems to me that we should move locale.module and translation.module to a new top-level menu item, then contrib modules like i10n_server could add themselves there - opened a core issue for this here: http://drupal.org/node/368064 (and similar for simpletest/devel - http://drupal.org/node/368067)
Nat
For the l10n_server case, the separate high level item makes sense,
since the l10n_server is a kind of standalone software. It does not
help you track users, enter content, vote on content or whatever, but
in a sense it does all of these.
Gábor