Authors already in payments get a bonus for adding gems.
I believe a lot of authors have gotten into the program this way, actually . It’s definitely easier.
It’s not, but you could live off it depending on where you live and how many reads you gain in a month. (So, a very very small portion of users could actually live off it.)
Before, when no one could have seen them, I would have told you to go for it. Now- it’s obviously up to you. If your story takes off or if you get put on a weekly shelf, having the gem choices will help you get into the payment program faster. It’s not a lot of money, but it’s obviously nice to get something when you’d usually do this for free.
As long as you don’t make the gem choices annoying, I don’t think it’ll bother most people? I have them in my newest story and so far no one’s complained as I mostly just use them to add points.