Personally, I don't think we need to remake any game of the Advanced Generation (Kanto or Hoenn).
Hell, the reason why Gen 1 was remade in the first place is because the creators needed to find a way to get the remaining Pokemon from Kanto and Johto to complete the National Dex for Hoenn as the GBA couldn't link with the older GameBoy systems.
The main reason why Gen 2 was remade for the DS is for exactly the some thing. The DSi and all systems after couldn't link with the GBA games and the creators needed to find a way for players to complete the National Dex.
Gen 5 doesn't have this problem as you can freely link up with the Gen 4 DS games.
Also, the first two Generations were remade because the GB and GBC cartridges were glitched and the saved game data was corrupted over a period of time. Without those remakes, fans would not have been able to revisit those regions. As I understand it, the GBA games don't suffer this effect so anybody who misses the Hoenn region could just fire up their GBA and relive their adventures there.
That said, if I had to choose it's a no brainer. I'm a Kanto boy at heart.