If they do remake G/S/C(well, maybe not C cause it's a remake, but it'd be nice) I hope they include Kanto, but have an exceptionnaly well done Johto. Having a battle frontier would be nice, but they could include that in the Sevii islands, so as to not disturb Johto, but add on to FR/LG. And Mt Silver returning would be a must.
I think my team in a Johto version would be: (brackets contain pkmn that were added after G/S/C were released, but were evolutions of GSC pkmn)
Feraligatr
Murkrow(Honchcrow)
Ursaring
Tyranitar
Magmar(Magmortar)
Electabuzz(Electivire)
...turned out a lot like my current team, sadly... Maybe I'm just not original, or I've forgotten about a lot of the GSC pkmn...
To avoid repetition of types, you can replace Murkrow with Misdreavus, and evolve it into a Mismagius (65/65/65/105/105/105 I think) (BTW, the stats are in HP/Atck/Def/SpA/SpD/Spe order).
And replace Ursaring with Furret since Furret has better Speed XD </JK> Furret's a fairly weak Pokemon.
Anyways, to replace Ursaring is Gligar, which can evolve into Gliscor (75/95/125/45/75/95). Better typing despite 4x weakness to Ice, and if it has Sand Veil, you can use Tyranitar's Sand Stream ability to activate Sand Veil. It also acts as a Defensive Wall.
You might consider trading Magmortar for Scizor (70/130/100/55/80/65), since you really can't find many opportunities to use Fire attacks.
These are just my recommendations to remove your team from common weaknesses, particularly Ground.
