I do sound for my wife's band. They're all acoustic, but the same principals apply.
For songs that need more reverb on vocals, I add more reverb. Songs that need more fiddle I add give it more. Some songs need more on the solos, less on the chorus, or whatever. Wife recently got a boost pedal, so now she can handle the generic "loud/soft" bit on her end.
You could get pedals for your vocal reverb and so forth.
There's a tradeoff. The more stuff you put on your side of the mixer, the more complicated your performance gets, and the more opportunities you have to mess up. Also the more stuff you have that can stop working mid set. On the other hand, the more you rely on the sound man, the more your set is in his hands. The real downside is that you can't hear FOH, so you won't even know.