Seeing that there is demand for so many different layouts, I want to add:
Would it be possible to offer a keyboard without any print (fully transparent keys) and then stickers that people can apply to get their print? Of course, only for the least requested prints.
Also, where's Cyrillic or Arabic? I'm not biased towards a specific layout (I use US QWERTY), so my opinion is that these two are the most important ones. While the difference between, for example, UK and DE layouts is just around 10 keys, most of which are punctuation, I hardly imagine typing on a keyboard that has a completely different alphabet. For example, I can't imagine typing on a keyboard with Cyrillic prints only (well ok, I can, but only because I touch-type. Let's say I can't imagine my mom typing on it), so if I were a Russian (who doesn't touch-type), I assume I would have a big problem typing with QWERTY layouts.
I understand, the Indiegogo units are for current community members - and those have already had the chance to be heard. But please consider what I said when you start the "normal" web shop