Thomas Quinn on Addins
Thomas Quinn quietly started his blog on Addins.
https://blogs.msdn.com/tq/default.aspx
Thomas works as an Architect in VSTO (Visual Studio Tools For Office). He worked on the Addin model for Office for long. Now he is also looking to solve the managed Addin problem.
If you care about Addin/Add-in/Plug-in, watch Thomas' blog.