I promised to follow up with a couple smaller add-ons to fill some of the gaps left by the failed child deals. Here are a few ideas:
Specialty Kit - I tried to include the most commonly needed ones while reducing the size of the kit.
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Slang Kit - Took a stab a this one. Everyone has an opinion on their favorite slang, so its a tough one.
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Novelties - I thought it would be nice to have a couple novelties. Maybe include these free if you buy one of the sets...
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Please give me some feed back on the content above.
Should I change this to a full IC thread?
Here are my thoughts.
We should see if we can get another Winkeyless option in because I think a lot of people are interested in that.  If that is the case, you can probably remove the 1u keys from the specialty kit that are duplicate from the winkeyless kit.
I am not sure when people would use a brown 1.25 unit caps lock key.  I think a 1.25 blue one will be used, but I am not sure about a brown one.  Same with a 1.25 unit blue Fn key.  I expect people will use a brown one, but not the blue one.  What layout uses a 1.75 unit enter key?  I have never seen that before either.  Otherwise, ya, that is looking pretty good.
Slang kit looks pretty good to me.  If the price is right I will buy it.  

I like your novelties.  That smiley face is awesome.  

Ideally it would be possible to buy blanks of keys bigger than 1u.  That way people can pick up a matching color key if they can't get it in one of the sets.