Bear in mind that Lush 2.0 isn't just a redesign of the site, it is a completely new platform. Slapping a new theme on the old Lush would have kept the people happy who wanted to keep things the way they were but wouldn't have addressed any of the major issues that were impacting the day-to-day running.
Gav was retiring from active development and support of the site and he had been the sole programmer of Lush for a decade. With hundreds of thousands of registered members and tens of millions of views each year, it was a priority to ensure that the site was scalable going forward, made use of new web technologies to maximise reliability and performance, was mobile responsive so that the user experience is consistent from one device to the next, etc.
The core functionality of the old site is present and most of those features that were not part of the migration are either already on the development roadmap or in the suggestions pile for review. I have personally made in the range of 15-20 suggestions myself, from better visual separation between forum posts to mailbox UI improvements.
This stuff takes time to code/design. So, it's not that no one is listening to members' opinions, it's that hundreds of people posting their gripes in forum threads, many of which have already been mentioned at least once, just muddies the waters making it difficult to identify what actually needs prioritising.
Give the new development team a chance to get their teeth into things.