Have global variable and assign data from inside your angular controller to the global variable. This should be usable in ur component now.

You should leverage http://adobe-consulting-services.github.io/acs-aem-commons/features/osgi-disabler.html. This way, you use config to disable rather than manually doing so.

Try 1. export as package or vlt2. run DS GC3. import back to AEM

Is your question, how to migrate from current data store to a different datastore type?If you dont want versions, you can replicate to another instance with a different datastore. 

Does this http://blogs.adobe.com/aemtutorials/2013/07/24/customize-the-client-context/ help?

What is your usecase. Injecting child resource is possible. Please refer to https://sling.apache.org/documentation/bundles/models.htmlList injection for child resources works by injecting grand child resources (since Sling Models Impl 1.0.6). For example, the class@Model(adaptables=Resource.class)pu...

FTP upload is only in Assets on Demand (the cloud based on Demand assets solution).

Please keep in mind,that this limit in number of concurrent uploads is limited by the browser and not AEM. The defaults that  I know are  Firefox-6, Ie6/7 - 2 , Ie8-6. 

Please refer to multifieldpanel at this link http://adobe-consulting-services.github.io/acs-aem-commons/features/widgets.html

Inheritance across templates is not possible with design dialog. You have to use a different approach for that. I do not understand your question on i18n. Please explain.