About Solrock and Seviper, sorry. I really don't know. I remember someone stating that s/he was able to catch a Lunatone at the Safari Zone in HeartGold. And if Luna and Zang are indeed version-exclusive, Serebii would've noted it before hand.
as I have mentioned, I've been challenging gyms, and I only got the 1st 7 in Kanto, so I haven't defeated Red. Steven hasn't appeared for me and I can't find Latios roaming Kanto... I'll focus on defeating Green and Red and inform you of anything I can.
But I kinda think Latios is exclusive to Soul and Latias is to Heart, although I'd preffer the oposite, since I'm getting English Heart
I answered that in the thread. A friend of mine claims to have found Slugma and Houndour in the Safari Zone. I couldn't find them, I haven't explored it as much myself, I've been challenging gyms and catching legendaries xD
I have, however found Murkrow and Larvitar in the Safari Zone... so it's possible Houndour and Slugma are there too, not sure, however
Me too. The rosters may not have changed much(except for Clair which I am very happy about) but at least they're a challenge. The Kanto gym leaders also look good. What's your favorite gym leader music the Johto or Kanto one? Mine is Johto.