Different Heroes

I think I was worried about who to pick for the hero of The Algorithm. If I was reading a series and I was invested in the characters and the world, would I be alright with my heroes from the first book not being in the second book? Even if there are other characters that carry over, will the lack of a familiar headspace be a problem?

For Isaac’s Story: London I decided to have different protagonists in every book. They exist in the same world and they run across some of the same larger-than-l...