Ideas for Sniper Unlockables

I very rarely play sniper, but a day or so ago I had some ideas for the unlockable sniper weapons.  Here they are:

1)  Stealth Rifle :  Headshots don't do any more damage than body shots.  Slightly faster charge up time.  No death cam shot giving away your location.

2)  Motion Detector  :  Only one can be deployed at a time and it takes the place of the sub machine gun.  Warns the sniper when an enemy (other than a disguised or cloaked spy) passes over or near it.

3)  Didgeridoo  :  Always crits against a cloaked spy.  Never crits and is quite weak otherwise.  Makes a distinctive noise when it hits a disguised spy. Very slow. Has an awesome taunt.

Thes are really good, though, does the didgeridoo only crit on a disguised spy or cloaked spy?
 Because most of the time when spys see snipers they forget about their cloak and just go in for the kill
Making the didgeridoo quite pointless

don't be hating on the digeridoo

No thanks. All pretty useless im afraid to say, sniper rifle, most times you will know where the sniper is anyway, I would take the smg over the motion detector anyday, and I would never ditch my last resort weapon for something that does practically nothing :/

I actually really like the stalth rifle idea.  To many times i get a string of kills from one spot only to be killed by someone who switched to sniper/spy for the sole purpose of killing me.  The only thing i dont like is the no headshot thing.  The headshot is the snipers thing.  So i propose that the rifle do normal headshot damage, but body shots do less damage.  This makes positioning and finding a good spot much more viable for a sniper.  I think this is a fantastic idea and needs more exposure on the forums, and posib;y (with some tweaking) is worthy of sending to Valve.