The current version in tree has a big disadvantage: It uses the full panel width in deskbar and multi-row modes, thus stealing a lot of space. I decided to write a small patch so it uses only the same size as a launcher icon, in other words: A single panel row. In case anyone finds it useful, I'll attach it to this bug report. It patches the vala generated c code directly, so can be applied to the existing package relatively easily. Reproducible: Always
Created attachment 341466 [details, diff] xfce4-notes-set-small.patch
Please understand that we as a distribution only accept bug fixes. New features should definitely be proposed upstream. You can find the Xfce BTS at https://bugzilla.xfce.org/.