I hate to say it; but the Command type is really reminding me of the Substance keyword from MTG. I’m not sure it seems good to just invent a new keyword in order to make certain cards work like this.
I was hoping you'd post a better fix; I gave you a lot of time. You let me down, GendoIkari! And however silly I'm being, it's also true; you did have a chance to offer a solution.
My next best fix was to say "printed cost" on these cards; you could only Inherit something with a printed cost of up to $4. I like that fine, but some people screamed that they'd hate that. What fun is Inheritance if it isn't a combo with Bridge? That seems ridiculous to me but multiple people felt that way. Stef's favored approach was to say that a card can't play another card while the first card is already playing it, unless the card to be played has moved. You may be wondering why it refers to both cards and cares about moving and well, that's the only way it could work. It seemed like that was an awful rule to try to make people learn, and that no-one was ever possibly learning it.
The actual fix used minimized the number of interactions lost, and puts the answers right on the cards, once they're actually reprinted. So far the downsides are disappointing you personally, and some people saying, wait why not Necromancer too (it's to not have people sad about lost interactions guys).
I imagine no-one else felt like they had to devote as much time to this as I did, but a bunch of people had the chance, and some of them did chime in, on Stef's playtest discord and my playtesting discord. "You can't play a card you're already playing" was LastFootnote's suggestion. Ingix found lots of edge cases to spoil various approaches. As he noted, it was easy to fix the loops; the hard part was fixing them while not messing up other situations. You say e.g. "You can't play a card you're already playing" and then there's, now you can't Captain to play Throne to play another Captain to play Throne because it's the same Throne you're in the middle of playing, and no-one's ever catching that; or, but wait now I can do the Mandarin thing and lose a Crown in my deck and draw a Crown and not know if it's the same one and so not know if I can play it or not.
Feel free to just ban all of the relevant cards from your games, which fixes all of the issues with no errata needed.