I think the commentators do a good job, though I must admit Derek Brien does not seem to have had much media coverage, maybe it's up to some of his supporters to do more posts like the above by Pykey.
I wonder who will take over commentating at Glen Helen, now that Maurice Mawdsley has retired? There used to be a guy called Dave Moore who did a bit of pit lane commentating at the MGP, and possibly he commentated at this years NW200. He seemed to know a fair bit about the riders etc.