Thanks everyone for your input. If these were seedlings from my own plants I wouldn't be so concerned, but these are from four batches of seed from Adenium Ko in Taiwan, so putting them under the knife makes me a bit nervous.
I kinda agree with you, Hetty and Rick. Most of them need to grow some more before I make the decision to snip or not.
But there are a couple with significant side branches that are looking at me. Those side branches, I can see it in their eyes, they want their chance to shine.
The caterpillar pruning reminded me of a seedling whose caudex was only about an inch tall when the bottom half rotted away. I stabbed the top half into Rootone, gave it a chance, and it lived. So with those things in mind, Melissa, and with your casual vote of confidence, I feel more inclined to make a couple cuts.
It'll be a couple days before I can get back to them. I'll post back!
Thanks again!