I think my team will be different. I didn't evolve my starter (didn't like the way Croconaw and Feraligatr looked), but I probably will this time. I also think I'll go for a little more variety (grass and electric weaknesses were huge issues for my original team).
For the RBY releases, I focused on doing challenge runs with new teams. This time, though, I think I'll just make one file to play thoroughly. I don't want to rush too much, but it will still probably be faster than my first file because I won't get lost/stuck like I did back then.
My Pokemon abilities and knowledge really improved during gen II (went from soloing the game with Totodile to breeding and developing decent, balanced teams, though my "main" team at the end was still really unbalanced), so my approach will probably be more similar to what it was at the end of gen II vs. what it was like when I first started my Gold file.