I don't know it anti-aliasing is the right term, but yeah, they just look a bit blurry even at normal resolution. But I feel like it should still be sharp looking when scaled up to a whole number? like 2x, 3x, etc.
For example, compare these two images: It has that semi-transparent outline, it also has mixed colours per pixel block? 
Hmmm, I totally see what you are saying! Okay - I am just in the middle of a move, and once I'm settled in my new place, I will try my best to address this issue. I have updated my pipeline since this first pack, so thank you for bringing to my attention this need for an update!
Thanks again! Kindly ✨