Only ever had two names on the backs of shirts. Don't regret either.
One was Nilsson when we had that circle on the back around '98.
Other was my own surname on the back of the 92-93 third kit cos we were able to get it for free. Wasn't going to turn something down for free, but was worried a player might leave, so went with my own name. Thinking way too much even as a 12yo!
Actually tried to think of a way you could replace names because of it. Thought of having the name put on a separate piece of fabric which might be attached by press-studs (worried they might hurt if you fell on them), velcro (too easy for people to rip off and would probably look naff after a while) or sewn on and could be unpicked. What a dull child (but at least I started as I meant to go on!)