Regarding the first question, I've gone ahead and implemented random build orders, so at least the two Ls in HELLO will usually produce different animations (depending on random choices). Designing completely different glyphs for the same letter is quite challenging (finding these already took a lot of work).
Regarding the second question, there's already a 2-second delay. I wonder if there should be a slider to specify the delay?
Also, can we get a checkbox for "pause after animation"? I want to take a minute to check out the letters before it starts animating again. I know you can click off Animate after it finishes, but if I share this, others may not be so keen.