I was a consistent participant in this theme during its first iteration, starting with maybe the 20th or so version. Therefore, there was already a lengthy blacklist when I started researching, so I remember that there were a bunch of players who I thought would make good teams but for whom I never built teams because they were not available. However, now that the blacklist reset I can't remember any of those good players so I end up using guys who I thought were good ideas while the blacklist was massive but probably aren't as good now.
Example: I'll go with Aaron Sele
1993 Red Sox
2007 Mets