While this is a valid proposal I do have several issues with what you are proposing. If you don't mind I'll address the issues one by one.
But according to a recent poll on this forum
Link? Screenshot? Making up statistics is too easy nowadays, you know what they say "pics or it didn't happen"
5 heroes among the mightiest in Tolkien's
I do have some concerns about your list since it seems that your pick follows no particular order. Fili? Why not kili or both? same thing for Orophin. Also I believe, personally, that those are definitely not the top five non-ring hero mightiest heroes. I'm sorry but honestly most of these heroes would probably be crushed by the ring, apart from Bilbo who has shown he is able to hold up quite well. Hwaldar would become nothing but a wraith, beregond would be perverted worse then Boromir. Orophin would probably be vaporized the moment he puts it on
As for the new Ring heroes concept, Gondor already has 2, Bilbo and Fili are in the same faction and overall just why these particular heroes which are quite low ranked and cheap.
Overall a valid proposal but with a concept I don't see as ending up on anything. Most the thing about Ring heroes in the Edain Mod is how unique they are, adding more and more ring-heroes would just kill that uniqueness out. I think that your case might have been easier to argue with had it not looked like you had just picked heroes out of a hat. Strictly from a debating point of view I am formally against this proposal.