First u need to convert external jar into osgi using bnd tool etc.. Need to use webdav tool to place under libs or use crx explorer. With crxdelight I don't think there is option.

AFAIK there is no settings and you need to handle with custom implementation. Are you expecting major changes ? One thing come to solve would be Create a tool to find reference of pages using the component & then explicitly set changes in all those pages matching default value or use boiler template...

There are multiple ways to handle it at project level & there is no out of the box configuration for it.

This is already answered by justin snip of it belowIn Sling, Authentication Handlers can be applied by path, so this is just a matter of configuring each Authentication Handler with the set of paths it should handle.

The default analyzer used in CQ does not index special characters, and just create separate tokens in Lucene for words containing them. Use different LuceneAnalyzers per your need for your property & verify. 

Aem exact version, list of hot fix installed & browser version please.

It fires on click of save.

1) a)  Since you have list ready, create a workflow step & map the tags accordingly.3) Use the validate & other methods available. Please referhttp://dev.day.com/docs/en/cq/current/widgets-api/index.html?class=CQ.tagging.TagInputField4)   Use a filter to fill the tree as per user login info.   Or se...

1,3,4 requires custom implementation. For depth how much tag you are planning? Challange would be authors to select those tag & activation will be slow. 

Out of the box provides it already. Attaching snapshot & more details look at /apps/geometrixx/components/topnav/topnav.jsp[img]TopNav.png[/img]