also note that certain woods like basswood are EXTREMELY WEAK. really. i've worked with them before. if you were to tap your finger nails on the bare body, you can see the marks already.
of course, not too hard to solve with a little of sand paper and a clear coat. but that would mean even with three layers of protective stuff and the like, the body itself could still be damaged with slight knocks and drops.
but to be on topic.
i hardly think the wood type affects tone as much as the other hardware do.
i mean you should only be troubled about the wood type if:
1)you have a body made of cheap plywood that has really bad acoustic properties.
2)the rest of your hardware: meaning your pickups, bridge, neck,
amplifier (THE MOST IMPORTANT FOR YOUR TONE) are already the best they can be and you can't obtain any better hardware out there.
then yes, you should be concerned about wood type.
otherwise, i dont see why a guitarist should ponder and waste time thinking "oh my... which is better? basswood or alder? which is warmer? which is richer? which is brighter??" if his amp is a
crappy 15 watt marshall solid state
ps:not directed at the TS. im referring to just some people out there