i didn't read everyone's post, so if i copied sorry 
I think sentries should have an alarm, so if a spy gets by it beeps and alerts people around it ( like a car alarm).. also think it should have a shield enabled ( i dont believe 1 uber demo should be able to take down 3-4 sentries in 10 seconds)>> i think a shield that would make a spy have to sit there and hold down his sapper till its drain, then it'll go on the steady sapping flow like it would normally...
also think you should be able to make it to where you can upgrade the range of your sentry by making it level 4, or to where a medic can uber the sentry for a defense tool. or offensive ( kritzkreig)
-om

I think sentries should have an alarm, so if a spy gets by it beeps and alerts people around it ( like a car alarm).. also think it should have a shield enabled ( i dont believe 1 uber demo should be able to take down 3-4 sentries in 10 seconds)>> i think a shield that would make a spy have to sit there and hold down his sapper till its drain, then it'll go on the steady sapping flow like it would normally...
also think you should be able to make it to where you can upgrade the range of your sentry by making it level 4, or to where a medic can uber the sentry for a defense tool. or offensive ( kritzkreig)
-om















