Matt_Stevens said:

Gents (and ladies) I would love to share the subtitles and audio. Question is, how?

What would you all recommend? What's the best way?

Spleen?

I would think that you could certainly share your entire custom BD with the tweaked image there. I only have a few Spleen invites, but how many would be willing to download an entire BD? They may suffice.

Failing that, you could always use a public tracker. Whether or not you make the torrent file publicly available would be up to you.