*nod* I don't actually recommend implementing this as any kind of "do the whole lot of code" thing.

Just do it on files that are being changed - and doing it is surprisingly quick and easy. Pipe code through perltidy, which cleanly reformats it for you. Run perlcritic on the code, fix errors until all errors gone. Commit as "cleaned up code". Then start doing the real work. :-)

You're right that BML might be an issue, but as you say, conversion is under way.

I definitely think it would be a good idea to do perltidy/perlcritic as the conversion is happening. :-)