The normal route description for Peak Lenin is excellent. Spot on. I especially like your brief questioning on why one might consider a C4. Also, your naming of camps is consistent with the "locals" which may seem silly for me to comment on, but it helps avoid confusion.
I do have a question for you, probably more for the Polish speakers out there who have been on Peak Lenin in 2005, if you have any information on the young Polish guy (I presume based on my discussion with Faridah at Achik Tash) who died on the step above C4? On July 30, 2005 I passed his body and have been wondering who he was and how/why he ended up dying and in such an exposed place (indicating to me he was without any companions who would have moved him to a better place).
Thanks for your work!