I'm looking to develop a web template for use in Office365. I know that web templates are not available in apps. Would it be wise to create a new sandbox solution for this scenario considering Microsoft tells us "It's unadvisable to build new sandboxed solutions." http://social.technet.microsoft.com/wiki/contents/articles/13373.sharepoint-2013-what-to-do-farm-solution-vs-sandbox-vs-app.aspx
I've been told that the User Code Host is the part that will be deprecated. Is this true?
Thanks!