You said you had 24/7 personnel on call. Let's refer to them as the NOC.
Are they trained to type and follow commands, along with basic (i mean basic..) skills in *nix?
You could cut the cost of investment in automation which can be costly, and focus more on well documented (and tested as much as possible) steps or instructions that they can perform since they're up anyway.. You can use some of the allocated cost in training the NOC a bit more on *nix, scripting etc..
If anything goes wrong then they can call you and you can follow up. Depending on how good your steps are (and a bit of luck) you might end up waking up less than usual.
Of course I ask that silly question up top because you don't want to be awaken at the start of the maintenance saying "Hello sir, your MOP failed at `ls