its called L-R-C mixing, our ears see the image in black and white, either its to the extreme left or right, or its in the center.
That's a style of mixing, its not how we hear music. If you can't hear a difference between 0%, 50%L and 100%L there's something very wrong with your monitors or ears :/
Egan's band often has solos panned around 30% and it works very well for their dense compositions.
On the topic, I've never had a problem with mixes not being wide enough. If anything, I get very annoyed with mixes that are too wide. eg. Chimaira's Resurrection, the cymbals seem to be practically hardpanned, and its not realistic. Especially that ride bell, it sticks out the mix so much because it sounds like its 100%R.
And on mic'ing drums, I'm pretty sure putting mics directly above the cymbals in question would produce the widest image. If the mics are too close together, unless they have good off-axis rejection, they'll be picking up very similar things, and if they're too wide, the cymbals will all sound roughly the same volume. Putting them directly above the cymbals will get the most sound of that cymbal in that mic. Although I haven't had the mics to test this, so I could be wrong but I doubt it.
edit: also, just hardpan your guitars. There's almost no reason to put them at 95% and depending on your monitoring setup that could severely limit your stereo width or make almost no difference.