I like the original look so put down new sockets and staple new lamp buss wire on any playfield swap.
I have never had a problem with bare wire causing any issues and I don't get the value for the extra effort to add the solder tab with new sockets.
If you are putting back in the old sockets there might be minimal advantage if you go to replace them but you still need to solder two connections on every lamp and staple the wire down either way.
YMMV