Are you going to do something with them besides stare at them in 3ds and show them off? Make a fun map or something. Alteration is a great tool for that.
It really looks nothing like Horizon. I'd like to see you mod NFS Shift in a hex editor, or MW2. Why don't you try Forza 3 while you're at it. Anyways, the latest update has a FATX viewer, Forza 3 save editor, GTA IV save editor, and ODST profile campaign progress.
The only thing this program has in common with Horizon is the Castle Crashers editor and thats a stretch. These editors took a lot longer than 5 mins and I'd like to see you make them all in 5 mins each. You're sounding arrogant when you don't know how much work went into it.
You're post wins my Best Post of The Day award. (No, no sarcasm) Honestly, I don't give a shit about actually getting Recon. I want to mod it because it's a challenge. Halo 3 isn't really fun and wearing Recon isn't going to make it funner. I don't even really want to get it the legit way, I want to mod it. But to the OP, ODST hasn't officially come out, I doubt the switch is activated.
So? Mod your gamerscore to 500,000 then get back to me. You're not banned because you don't matter to Microsoft. You don't exist to them. They'll start caring when you are on the leaderboards.
Are you borderline challenged? You are still tampering with your profile, which Microsoft can ban you for. This is not "safe" at all. Lol at undetectable, yea, tell me how that works out for you.