[Suggestion] Consider adding a Support Gem Vendor

While playing the campaign, I feel support gems are very scarce and limits build experimentation. I would like to propose a fun idea of a "Support Gem Vendor" that would be located in town and sells Uncut Support Gems (only sells support gems up to a certain level based on current Act).

To keep it balanced, GGG could have scaling Gold Cost for purchasing Uncut Support Gems (first gem costs 500 gold, second 2,500, third 12,500, etc). This adds another Gold Sink, giving players another reason to value Gold.