Leo Lewis notes that boosters at the Japan Space Elevator Association are psyched. Unfortunately, material science problems are still a challenge, albeit one that has potential to be solved quickly (say in the next 10-30 years) and economically–but it’s still only potential at this point. Kevlar is still king of industrial cabling, body armor, etc. so super strong materials will be a laboratory curiosity for some years before they will be available for Earthbound uses, much less space uses.
One oddity: electric power delivered by the elevator. That would be an electric line that would stretch around the world. Probably better to stick with power beaming by laser. With solar energy very popular, that should not have any laugh test to pass. Another oddity. They stick with the far counterweight popularized by Edwards; this may be OK for initial deployment, but once mass is coming up the cable, the counterweight should be closer and heavier and the cable shorter.