I completely support this. And thank the folks involved for their time and efforts.

Strategically, however, please consider not threatening to sue, especially in the passive manner in that letter. To a lawyer, a weak threat like that shows that you almost certainly don't have the bankroll or resolve to actually sue. So why put it in the letter?

If you want to use litigation to enforce your will (something that sport anglers should have started doing some time ago) you need to simply say that you will sue by a certain date if your request is not honored, then when it's not honored, you must in fact sue--using a good lawyer--who is probably fairly expensive. Then do it again on a different issue. And again on a different issue. And about that time, you won't have to threaten any more because it will be clear that you are both able, and willing, to utilize the courts to enforce your rights.