I don't care if you PBT guys do SA, DCS or whatever. Just STOP COMPLAINING IN SA THREADS!
I've got GREAT news for all the PBT addicts, go here and buy these instead:
https://www.massdrop.com/buy/elemento-pbt-dcs-keycap-set
There you go, so don't go complaining here and now I wish this was PBT because I just gave you a link to go there and buy some, enough said already.
This is a beaut SA Profile key-set made in ABS hence for us lot here that love this, looking forward to it finally going Live 
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This set will be in ABS, because SA Row 3 in ABS best mimics the feel and texture of lego bricks. The plans include alphas with a glossy finish for the same reason. The set design we have now, if the community can get it made, is I think as close to a perfect tribute to lego Classic Space as can be done, and I think most of the proposed changes to PBT or other profiles and finishes, even if possible, would likely make the set less authentic and desirable, not more. As this keycap set gets closer and closer to production, less things are up in the air, and if you look at the discussions that were going on in the earlier pages of this thread, you can see some good reasons for why the set is the way it is now.
SA PBT dyesub is not possible at the moment, and while it would open up many possibilities for set design, it's not a goal of this set in particular. The possibility has been extensively discussed, among the community and with Signature Plastics, and they just do not have the capability to dyesub PBT keycaps in SA profile (The limited run that they will not repeat was blank), and likely will not for a while. For now, I think the community would benefit more from focusing on other efforts. A new font for SA, like the one Oobly is working on now (which this set will be the first one to use), would be the best way to improve design variety and flexibility, in my opinion. Look for the interest check soon!
Alternate kits will probably be relatively limited. This set is using a new, custom made font, which is an enormous project in terms of time, effort, and money. When each new legend costs $50 to make, niche layouts requiring nonstandard legends would need enormous of support in order to be feasible, and even if the support was there the extra work required could be prohibitive. If they do not require extra molds, other layouts might be possible, but again would require more time, effort, and support, and we'll have to pick and choose where to focus - and for now our focus is primarily on the custom font.
Oobly probably knows more about the status of row 4 shifts, but that conversation might be better had elsewhere.
