Another BIG, and I will say PLEASE, +1 for FULL installation/location control
But to be honest this is NOT just a new issue with the new C3. While C3 just blindly puts it all on C, even before C3, starting back in Sonar 4 or 5 (don't remember which one) it started putting stuff in the C:\Program Files... C:\Users\... etc., no matter where you told it to install and the argument then (AND SINCE) was it was a Windows Vista "requirement."
I've been moving and hacking the registry ever since to get most of CW stuff (Sonar, Common, DP, RP, etc.) OFF my C drive. It's a very large drive - its not a SPACE issue with me: its a USER CONTROL issue and if I had a SDD C boot drive I'd be very peeved - even one of the now 1TB SDD drives would overflow if all software mfg's. did what CW does.
(EDIT - PS everyone knows you can bypass C3 for 100% of the installs, right? I have not used the C3 to install ANYTHING - I get more control (albeit not enough) to simply download everything manually and install everything manually)
AND I REALLY like CW, been with them SINCE Cakewalk V2 in DOS! and I upgrade EVERY YEAR (expect one) .