just...

 

......... use common sense.

I like addons like FSGRW that pop up a notification and then update on the spot. Really saves a lot of time having to find it, download, uninstall/reinstall.

Unfortunately, the idea has merit but for many reasons it won't work.  Vendors prefer you to visit their website and read their marketing stuff etc.

 

I tried asking this over at Orbx and was told that I should just use their forum and read the Central report.  I checked mid summer and found out I was many, many patches short especially on airports versions....and then there are the one off fixes that are just posted into threads.

 

It all takes time, you go away on a holiday and come home and there is tons of stuff happening you can never catch up.

 

I know there is a natural urge to want to be fully updated.  The only way I can do it is to keep a list of all my addons and the vendors and visit their sites and look around.  It takes time and a few coffees but I don't now if we will ever be so lucky to have a one stop service.

+1 on this and its one of the main reasons I basically limit my purchases to only a handful of distributors.  I'm not affiliated with them in any way shape or fashion but, Simply as a satisfied customer I give a lot of kudos to Simmarket they keep track of my downloadable content in a very user friendly manner and notify me as vendors update their products.  I've also had great luck with Flight One, The FSX Pilot Shop, and The flight Sim Store. I visit individual vendors to get the latest info, screenshots, etc. but buy from my favorite distributor.  May not always get the lowest price this way but it cuts down on a lot of the inconvenience the OP seems mentioned.