David--
Actually, I think adding a little asterisk for the Manx phrase with a translation and a pronunciation guide would absolutely aid me as a reader to better enjoy the poem. I'm far too lazy to pull up a translation app or start googling in the middle of a poem. Such an easy fix! I suspect that we lazy readers may be in the majority, so best to bow to our tyranny and help us out.
The poem stands up to multiple reads. I'm still enjoying this on return.