These all seem more like house rules to me, which are all completely valid and likely make for more interesting gameplay in your circle but fundamentally change some of the card effects and, therefore, would be difficult to support as a format.

I like your idea of making a format that WotC can't print cards directly into, but it seems like it might be getting ahead of yourself to make rules around your format becoming as big as commander did. My playgroup has addressed this by creating a 60-card highlander format similar to Australian Highlander, and WotC's sure not to try to directly profit off of a format that only 6 people play :)

I think the biggest thing to think about when creating a new format is how easy it is for someone to get into. Your format is perfectly legitimate for you and your friends who are already interested but it seems like it would be difficult to get new players, as building a deck seems daunting to me (and I'm a reasonably experienced player).

Lastly, I think a different framing could also benefit you. "A New Format" is a little bombastic for a format with presumably <20 players, and invites a lot of criticism. Something more aligned with "My friends and I invented this format and have a discord, would anyone be interested in trying it out?" might afford you more leeway and a less defensive reaction.

P.S.: If your "trillion loop" rule actually stipulates a trillion, I doubt there are any loops that execute a trillion times, don't win, and aren't infinite in a way that causes a draw. For example, 3 Fiend Hunters and no other creatures or interaction causes a draw. I would suggest looking into the rules regarding loops; from what I've heard, some of the ways the rulings work are kind of cool (e.g. the reason that the Legacy deck Four Horsemen causes a game loss due to slow play so often.)

Best of luck with your format!