Spitfire's marketing team should not forget about older libraries
Just in the past couple of days, I saw three people suggest that Spitfire should make a library for a certain instrument which actually had already been done. I had to point out the North 7 Vintage Keys library for someone asking for a Spitfire Rhodes EP*, and the HGO2 library for a different person asking for a Spitfire waterphone library**. Another user was asking for a Spitfire shakuhachi, and someone else pointed them towards the Andy Findon Kit Bag.***
Spitfire's marketing seems to be focused almost exclusively on new releases, with the monthly 30% or 40% off on a single library being pretty much the only exception. Otherwise, unless an existing library is expanded (like SSO Pro or Abbey Road One), or receives a major update (like BBCSO a few months ago), after a new library gets through its intro period, it appears to just drop off the radar.
While of course, new releases need to be marketed strongly, and will always be at the forefront of any campaign, it would seem that many customers are completely unaware of some of the existing Spitfire libraries. Some additional marketing focus on older or "forgotten" libraries might help with sales of these.