Wow, you're making friends and influencing people today.
The Giggs coaching is only formalising a situation that effectively existed last year when he and Scholes were the managers link to the players. I don't expect Giggs to be getting involved in any other coaching of the first team. I can imagine that he might get involved with the U21's and U18's, or perhaps in the younger age groups however.
In Fletchers case we've had several official communications from United and the player himself that he expects to be able to resume a full career. Why should we not believe them?
We'll be expecting Bebe to go out on loan again, or get sold, just like we will with Macheda. Unless we expect the same of Giggs or Fletcher I don't see how it is the same situation. It doesn't change the fact that you stated that Fletcher, Scholes and Giggs were no longer options for the squad, which is actually only the case for one of those.