I'm gonna go against the grain and say there is no such thing as too much reverb... and I'm not even that old (only 100)

However, the trick is not to use that on the whole mix, unless you're after ambient mush
When using obvious amounts of reverb, the quality of the effect is very important. No plugin I've heard really cuts it, including the convolutions... For this my choice would be Kurzweil KDFX or KSP8,
Lexicon PCM 80/90, Eventide, and such. It is also important to apply the right kind of EQ both pre and post reverb.
Coventional wisdom says that the lower frequencies reverberate longer because they have more energy. I say this is a load of BS. It is completely dependent on the acoustic space, and in many places where I've conducted my highly
unscientific tests (clapping and listening) the low frequencies tend to die out rather quickly compared to the mids. So, the point is, if the material you're sending to reverb doesn't have much low end to begin with, and your reverb unit has separate control for low and high freq. reverb times, decrease the reverb time for the low frequencies and adjust its frequency anywhere between 100-800Hz, depending on the material.
A lot of subpar reverbs, this includes stuff such as Waves RVerb tend to sound grainy and boxy. You can help these somewhat buy applying some EQ cut in the midrange around 650-1000Hz, low Q settings usually work best, as well as cutting the highs sometimes even down to about 1500Hz. Another approach is not to fight the grainyness and use it to your advantage... Slap a severe compressor after it, something like 1176 with all buttons in, and follow it with flanger or chorus. Natural sound is not the point here, but then again, if natural sound is what you're after, you'd not be using subpar reverbs to begin with.