As automatic script conversion is possible,
there's really no reason to
keep mo.wp at all. You can just remove it completely. That requires just
one small edit to the subdomain mapping. Should be much easier than a
rename to 'mo-cyrl' which still uses the deprecated code.
Since there is currently no automatic conversion script and a very low
likelyhood that Romanian Wikipedians would ever accept such a thing on
their Wiki, I disagree. I think mo.wp should be moved, if anything (to
mo-cyrl - or ro-cyrl, since mo is now deprecated). If and when a
conversion script is made and implemented, it would make sense to me
to delete it completely.
-m.