I think this is crucial, IMHO.
As far as I can tell, most Nostr users just block Mostr and Momostr as their "starting pack" instructions. And I don't necessarily blame them. Look at my past several comments to Mastodon users. I haven't heard back from a single one.
And when I go to those Mastodon instances, I never see my comment replies on the post that got "bridged." Did my post ever make it back to the original instance? Was it rejected for "reasons"? Was it ever seen by the user I replied to?