I think playing Maiden covers was just a very small part in him deciding to leave, the same with other band members:I loved Blaze when the band first came out, two great albums and then the cracks began to show with losing Jeff Singer over playing Maiden covers
The steady line-up has changed, why has Rob and Jeff left the band?
Living and breathing this kind of music takes a lot of commitment and although Jeff was fully committed we couldn�t give him the security he needed at the stage he was at in his life so he decided to leave. Rob just said he didn�t enjoy it anymore and wanted a change.
Singer then took other gigs within the music industry and later joined Paradise Lost (and is currently playing with my Dying Bride).
Naylor left Blaze and became an airline captain. But if things had worked out for Blaze, they would have stayed longer, the same for Wray and Slater.