i wonder what will have the spy instead of sapper or disguise

Here is what they'll do with the spy
Revolver, it will get replaced by toxin injector. If you hit someone from behind with this baby it will constantly drain their health by 40 points per second. If you hit them anywhere else the damage will only be 5 damage per second and ramps up to 40 damage per second. Only a medkit can heal this ailment.
Stunknife, you won't be able to backstab anymore but if you hit someone with it they will be stunned for a second or two a hit in the back will have a 4 second stun. Oh and it works on ubered people as well. Deals less damage then the old knife though.
Disguise, gets replaced by advanced stealth you can use your stunknife with this but it will drain your stealth meter by a bit
Sapper, you can swap this out with the supersapper but it will also sap your stealth meter. Supersapper instakills turret though
That good enuff for you? Spy will trade in his range and disguises for a slightly larger stealth meter, and close combat stuff.