Although i'll probably just go with whatever I feel like adding to my team at the time, i've got a couple of team ideas that are based upon my previous Silver and Crystal playthroughs.
First ever Silver team:
Feraligatr
Pidgeot
Victreebel
-
-
-
Comments: This is a combination of my memory being blank from my first ever playthrough of Silver (in 2001) and that my team was really lacking lol. I remember that my Feraligatr was really overleveled and I was too dependent on it. Meanwhile, I had a Bellsprout for the longest time until I decided to level it up and evolve it into a Weepinbel, yet I never exposed it to a Leaf Stone. It may be worth trying to rework my old team for nostalgia and improve it in every way possible.
Crystal team:
Feraligatr
Pidgeot
Arcanine
Magneton
Espeon
Piloswine
Comments: This is probably my favourite 2nd gen playthrough team to date, and so I might decide to replicate this team in SoulSilver. However, one problem is that I believe that Growlithe will probably be a HeartGold exclusive like it was in the original Gold version. Houndoom could be a viable replacement if it is catchable earlier than the Kanto portion of the game.
Whatever happens, i'll most probably start with Totodile because it was my most used starter in Silver and Crystal. The rest of my team though is completely undecided lol.