I'm voting against it not because I think it is a huge problem but because it's such a difficult card to buy (and impossible to rent, as far as I understand), regardless of the price, that it's not good for the game to always stay in modern. It's not a huge problem because it's a useless card but it isn't super powerful. It would be much worse if it were a Venka or something like that.
If there's ever a Runi like card but much more powerful it would likely get the same treatment and it would be pretty bad for the game.
This is about the team doing just a fraction of what was promised for RUNI... it was sold as a VERY special and unique card and was promised to have a TON of utility as well as VIP access to new things. We need to start remembering these promises and delivering on them. Making RUNI a permanent modern card gives permanent value to the card, even for new collectors that may eventually join the game. As-is, RUNI has been seriously neglected and as it stands I will never trust a promise for future utility again (and never spend $ for such things) until past promises are delivered. This would be a small step in the right direction for RUNI.
I do agree with what you're saying. I disagree that gameplay should be the utility given considering that most players can't access even if they are willing to pay the cost.