Here we are in 2024, contemplating of replacement of one band's members. On one hand we love our ( Steve, Bruce, Nicko, Dave, Adrian and Janick) Maiden, on the other hand, as live show consumers, we want to get the best possible product. I formulated this dilemma a while ago: being in a band, apart from very tragic turn of events, it's very hard to spot the moment when it's time to hang it up. We all are humans and we all want 'it to last a little bit longer' whether it to be 'yeah, my favorite band is still active and touring' or 'tomorrow i'll play my instrument better, I will stay in the band yet for a while'. Step by step, and your favorite band becomes a pale shadow of the former self. Partly due to audience's 'please don't retire', partly due to the human nature of the band members.
I don't have answers what to do in this situation. That's the sucky part of the thing called Life.