When I was F2P, me and a friend would run like a mining business; where I'd mine all the ores then give them to him, he'd then smelt them, and then sell them to a shop or other players and I got half the profit. This was about 6 months before December 2007 so there was no trade limits. Anyway it got me to about 60 mining and made me good profit for F2P. But the trade limit came which stopped that (it was about the only thing which I missed after the Free Trade and Wilderness removal). Anyway, that's the only time mining or smithing was fun for me. It's now just a pain to train (lol). The only problem I can see with your idea is adamant bars, which would fall in price; making Aviansies less profitable, which would generate a lot of complaints from rangers. Either way great ideas.