A lot of the time I see users on these forums who use versions that are over 100 behind the current version. If a feature was implemented into Spigot to alert OPs (if you don't use op you will probably have the all the bukkit permissions granted) that there was an update for their version available. I'm not talking about saying, you are on 1.9.2, please update to 1.9.4 etc. I mean like 'Your version of 1.8.8 is 128 versions behind the current release, please consider updating it.' Just my 2cents.