I think the key to doing something like this is:
This set has the feel of a Rounders set, even though it has a different mold, different spots, and a completely different inlay.
As an example, I was inspired by the Hensel Cardroom set by CT member Damon. I've thought about a Rounders set for a while, and my current thinking is - instead of a Rounders replica or tribute, I'd rather have a Rounders- inspired set, one that takes its design cues from KGB and makes an obvious allusion to it, but has its own personality and distinction. My tastes are different than most, but I don't like the Circle-Square mold that the stock Rounders chips come in.