If I am killing you with commander damage, I am most likely going to do it with a dedicated voltron deck.
There are plenty of commanders that
can win through commander damage despite not building around it (
Alesha, Who Smiles at Death equipped with
Whispersilk Cloak/
Sunforger) and I can easily see a lifegain player gain an arbitrary amount of life, get teamed up on, and be left with no board. Even commanders like Alesha with only 3 power represent a 7 turn clock minimum, and I've killed more people than I can count with an unblockable, untargetable Alesha. Don't knock it.
Why are you crying over Sen Triplets? Your name is GolgariFTW, not EsperFTW.
Disclaimer: I personally hate Esper colors
. Not my thing. I see your point, but I feel like making out of color
disappear would be too much. Various weird cards that change the colors of mana would basically make your opponent's mana go away entirely, and
Blood Moon against non red decks would be even worse than it currently is.
And I'll address all the arguments against my idea:
Urborg, Tomb of Yawgmoth: So what if they get black mana? The way my idea is set up means that none of the cards in a deck with a color identity of RW, say, is that the only time you could use black mana specifically is with weird cards like
Sen Triplets or with the hybrid mana symbols of R/B or W/B. They already could activate those abilities even without black mana.
Opulent Palace (any land that produces colors outside commander's color identity): Its color identity is GUB, so it can't be run in decks that don't have a minimum color identity of GUB.
Lands/rocks/creatures that make any color of mana: You can still make mana outside of color identity of commander, but the only uses they would be have would be the same as black mana made by lands affected by
Urborg.
Bloom Tender: Yes, it would make G & B mana in the presence of
Deathrite Shaman, but like I've said previously in this post, that doesn't matter.
Rhys the Redeemed: Hmm. I would say my idea only works for cards that you're considering as a part of the 99. Therefore,
Rhys the Redeemed as a commander would have a color identity of G/W. As a creature in a deck, it can be in either W or G decks.
I get this gets confusing, but I think it's more simple than it seems. Any hybrid symbol on a card in the 99 can be considered as 1 color
or the other color in terms of color identity. As a commander, the color identity is the same as originally.