EDIT RE silver. I'd just add a land tile or two and create a fresh water lake in the 2 unirrigated islands, and strip out the silver from the islands, it's really the food that I think is the most important there.
OTOH, there is no silver on the habitat ring, and there are actually 3 islands with silver, from 10 o'clock to 7 o'clock to 6 o'clock. If silver is stripped from theses, there will only be gold on the habitat ring and inner isle, silver on the inner ring, and no gems. It would favour your idea of making the habitat ring worse if there was only silver on the habitat ring and gold/silver on the inner isle.
TBH I'm not entire sure what would be wrong with replacing the gold on the habitat ring with silver, replace gold/silver on the centre isle with gems (there are currently 6 resources as I see it) and place 1 silver on each isle, making sure everyone gets 1 silver. This does however, limit trading ability, but yoyu can't fairly split up silver/gold/gems into clusters as you've said before. Hence, keeping the gems count low to fight over later, the gold to fight over early and hte silver available to everyone, and the calendar res well spread, the happy resources do provide an interesting quandry for people to settle, fight and trade.
OTOH, there is no silver on the habitat ring, and there are actually 3 islands with silver, from 10 o'clock to 7 o'clock to 6 o'clock. If silver is stripped from theses, there will only be gold on the habitat ring and inner isle, silver on the inner ring, and no gems. It would favour your idea of making the habitat ring worse if there was only silver on the habitat ring and gold/silver on the inner isle.
TBH I'm not entire sure what would be wrong with replacing the gold on the habitat ring with silver, replace gold/silver on the centre isle with gems (there are currently 6 resources as I see it) and place 1 silver on each isle, making sure everyone gets 1 silver. This does however, limit trading ability, but yoyu can't fairly split up silver/gold/gems into clusters as you've said before. Hence, keeping the gems count low to fight over later, the gold to fight over early and hte silver available to everyone, and the calendar res well spread, the happy resources do provide an interesting quandry for people to settle, fight and trade.