As other chatters have questioned, I don’t understand reason 1.
IMO to join a tribute band you really must be into the original band, it’s more passionate than being in just a general covers band, of which I have been in many and I’m currently in.
I played in a Free tribute band for a few years, one of the main reasons is that me and the rest of the band members were really into Free, I would still be doing it now if we hadn’t lost the vocalist (who was first rate, couldn’t find anyone good enough to replace him) as he went on to do his own original material.
Playing in a tribute band usually involves playing gigs more far afield, playing locally all the time just would not work.
One of our old vocalist from the 80’s is now one of the top Bowie band tribute acts and a lot of his gigs take him over to Europe.