Updating the base NetBeans Platform for my application

Also my users are very conservative and reluctant to do a new install - once it was even only possible to deliver the app on an external harddrive. But, having the entire install just a in a ZIP which needs to be extracted makes it easy and is not seen as an "install" as such. 

The main question is : Is it worth the effort looking at cost/benefit ? I.e. Updating the underlying NB platform is not something I do very often. In fact I have only done it once. (Going from 6.5 to 8.2  http://bruehlicke.blogspot.com/2016/10/porting-my-nb-65-rcp-app-to-nb-82.html  ). It involves a major testing phase and it is way simpler to ask the client to unzip a new version. Over the years there were a few clitches in the Nb which I found workarounds for - it was for sure a safer approach just updating individual modules via update center than trying to inject new platform base modules to an older installation via the update center.