Okay, now I don't know how far you are into this, but let me say this:
DO NOT SHRINK KANTO!!!!
You see, the problem with ShinyGold and LiquidCrystal, is that they made Kanto smaller than it is in FR/LG just because it was like that in G/S/C. That was one of the original problems with G/S/C, but the whole point of a remake is to correct that (like HG/SS having a Kanto bigger than the previous Generation), but whatever you do, DO NOT MAKE KANTO SMALLER THAN IT IS IN FR/LG!!!! It was done in G/S/C due to space restrictions, but I don't think that will be a problem.
So please, do not shrink the size of the Kanto maps.
EDIT: And if I were you, I would look for a different arrangement of the Route 29 and Route 30 music. Your Route 29 music just sounds bad and isn't exactly faithful to the original, and your Route 30 music has messed up notes at the beginning that clash with each other. If two notes are to make a chord, they should never be within a full step of each other, they should be at least one and a half steps to make a 3rd. Sorry if that doesn't really make sense, but anyone who knows how music is structured should know what I'm talking about.
Liquid crystals kanto, was almost twice as big as the original (as co-owner, I would know), hence the underground, the fact you could explore places that were "blocked" in the original, re-battle leaders, Viridian forest and staying true to the originals at the same time. Shiny Gold was based more on the G/S/C Kanto maps. Get your facts right bro. We're not here to talk about Liquid Crystal or Shiny Gold. Kanto was not bigger in HG/SS. It was the same, other than 3 more events and altered routes it was the same as the original. Just with bad pallettes and crappy textures. The Official remake was bad, it didn't have as much playability. But like I said, We're here to talk about the AMAZING Oro Sole.
HackMew/ Andrea, this hack is remarkable. By far I think it could exceed Heart Gold and Soul silver. The effort you put in, and the care and dedication in this hack truly shows. I'm happy to be spriting new and custom sprites, EXCLUSIVELY for ORO SOLE. Going onto what AztecFire said, kanto should be slightly bigger. But, new events will take away the feel. So think wisely, I'll me happy to provide ideas on MSN any time. I know you're not worried about Kanto yet, because it's not a priority nor have you even got that far yet. But I think your fans are planning ahead. ^^
Regarding your music, this is constructive criticism. It sounds great, and by what I hear of the track sets and instruments. It should work in game exactly how we hear it on the thread. However, I think the problem is, it doesn't sound new. It sounds like it did in G/S/C just in Fire Red style, which is what you're going for in style but judging from previous comments I think people would prefer altered versions of the existing songs, like HG/SS gave us (the music in HG/SS sucked though). But just work on the music when you're free.
The intro sprite looks good, if I say so myself. *Head grows*. You altered it okay too, if the face you altered bothers people, tell them to play another remake! It's your hack, by all means take feedback, but keep true to yourself. Your judgement matters the most! The Title Screen looks nice, couldn't have done it better myself! Graphics look professional all round. Looks like an official remake. I can't wait to see screens of the RTC D/N. I'll start working on some stuff for you tomorrow by the way. Keep the tiles as-is. FR Tiles look decent and professional in my opinion. Hence why next release of Liquid crystal will have some Fire Red Tiles re-imported, not completely though. I think it looks more presentable the way you're doing it. So keep it up. FR style is the way to go, otherwise this turns into, Shiny Gold and Liquid Crystal. As a Friend, Graphics Artist and fellow Re-maker; My advice is, to use Fire Red styled things. It also adds originality to your hack by making it seem official.
Good Luck! Amico mio! (I haven't spoken Italian in years) xD
P.S. If you don't win Hack of the year, Week, Month, Decade, Century or Millenium, I'll shoot myself in the leg.
~Zeikku