From a consumer standpoint I must say that even though OP's intentions might have been good (wanted to run a desired colorway and make the set available again), it doesn't look like he has thought much beyond the IC. You've taken two renders and mashed them together and presented us with that as the only basis to work off of.
It's one thing to run an IC; it's easy to get people to say "I like that color, yes I want it." But a group buy consists of so much more. I don't know if the OP has any history running GBs, but I would rather buy it from someone who has run the set before, who is currently in discussions with the vendor, has put more thought into this, and who has already completed over 13000 orders for the community to date. Think about that for a second. Think about the massive amount of time, work, and money out of pocket involved. We are all people in this community, and it's easy to forget that. People gripe about incompleted orders as if bunnylake can personally whip you up a set in his basement and send it out the next day. Let me tell you, if he could, he would. A lot is out of the hands of the organizer once things start rolling, and if you think you can sort through 500+ sets, and go through the GB process (that could run for years) without a hitch, then power to you, and I look forward to participating in any future buys you may run - but in regard to GMK Penumbra, I would rather go with someone who has the experience and history.
You say "I love the colorway, I love the set, I respect the creator of the set but I would like to see another round of this set. I am trying to make that happen with GMK Solarized." but I have not seen that respect. To either the creators of the set, or the creators of the renders. Clearly the information presented in this thread indicates that there WILL be another round of this set. If it is happening already, why would there be any reason to run a parallel process?
If the goal is to have another round of this set and make it available to more members of the community - then who is running it does not matter as much as communication and mutual respect. This whole thread could have been avoided if there had been early communication, and all this stupid drama could have been avoided had parties shown each other a little more respect.