I'd rather have 16GB for OS development just because it's so much faster to backup and restore. But I'd pay $20 more for 64GB in my daily-driver/production machine, so that's what I voted for.
I'm anxiously awaiting this product... and the Galaxy Tab S5E which should hit the streets in about a week.
I'm new here, but wanted to add that:
1) I am excited to hear about all of these new hardware developments, and really appreciate the polling and open discussions.
2) I voted for the 64GB option, and I also would gladly pay extra for a 4GB RAM option, if you ever consider one.
A larger RAM capacity may be considered too, although very unlikely.
We've had similar feedback regarding the 64GB eMMC on Twitter, with approximately 80% of users agreeing selecting the 64GB option.
We'll let you know if its possible.
Personally, I agree that keeping the $99 price-tag is probably a better idea, but it seems that users are set to have more storage.
I'm looking forward to the PineTab because I plan to tinker with mounting a couple around my place and using them as thin clients to a central computer. A $20 bump means I buy one less tablet for storage I don't plan on using.
I think 16->64 is a meaningful jump for a portable device without a cell radio. For an immobile minimal-wiring situation with stable internet, the story is different, or for a device whose connectivity is mostly through wifi. Games like local storage as well, but I don't think gaming is a major use case here.