Back in the old days you had to shout for a long while too... Like doing CoP events, It was hell finding people for Bahamut V1 and things like Divine Might as well.
I can't adequately speak on what its like to be a brand new player in 2011, But neither can you, but i do know its been rough from the beginning, and as a new player to a nearly decade old game it wouldn't be wise to expect to jump in and have dozens of people waiting to hold your hand through the game.
We're not saying that the system is fine, what we are saying is that you can find help if you try, a lot of people are still out there helping new players, the only thing you really have to do is make it to port Jeuno to shout.
Your bulleitn board idea, . I think you should flesh the idea a bit more. I tried reading the OP to get a good feeling of what you were proposing but I'm afraid i don't understand.
You say a player can put put a request for help at a cost (i.e gil? or an item) and hope players chose it?
How would you make a request/
How would rewards be handled?
What types of Rewards are there? Exp?
Could you leave messages on these boards if you're say, in a different time zone but still want to help?
How would it handle Different languages (i.E would it translate it? or would there be JP/EN requests separately/Together?)
What Items do you mean when you say "Sign up using items"? Do the players who help get this item? is it lost?
How long would the request stay on the board? would you get a refund if no one took it? Could you cancel it?
I'm not saying its a bad idea But explain it to me like I haven't played the games you suggested its like. Because its very confusing to me.