I might be able to offer some insights into featuring and reads. I posted one of my books — an erotic chick lit romance mashup — bit by bit. It was originally a six part serial, so it was LONG. 150K words or thereabouts.
The heroine is 35, the hero is 40+. There’s talk of work life balance, whether to have children, marriage, infidelity, and, yes, amnesia. LOL.
By posting bit by bit, readership grew. Wattpad featured it, and now it has more than 1.7 million reads. I think that book also helped me get into the Next program with an exclusive book, and they just asked me to put a second book into Next, and I accepted.
I’ll probably take the first book with all the reads down to go into KU (I’m putting most of my back list there), but I want to keep some paid/exclusive content here, and on Radish.
So, it pays to update frequently, and I wouldn’t always worry about writing to the average Wattpad age. They might come around, or you might find other readers