@kavi4 - there is upcoming add-on features for AJO named "Orchestrated Campaigns" out later this summer that will allow for Audience Building on a canvas with relational tables and datasets. I would reach out to your Adobe rep to see if you can get a meeting / preview of this feature. 

@Taal Send Time Optimization is coming into AJO campaigns soon! We have this feature on the roadmap for support

@riballor  we've thought about this as well. I think the challenge is that we cannot auto-close these Journeys as depending on the type of action you may want to keep the Journey live indefinitely i.e. Web Content. Agree that in cases like Single-shot email, it would likely make sense to close the J...

@ShashiCh - If it is date specific, suggest creating scheduled Campaign actions. We are also introducing additional recurrance options for Campaigns soon!

@Selliers suggest using the "View Fragment" option  as it will open up a preview of the fragment within the personalization editor so that you can reference variables while working in the content   

There is also the ability to bulk create test profiles from the "Create test profiles" widget on the homepage. It is somewhat limited in that you can't add a ton of metadata, but you can always update profiles later on. We have a bunch of features planned to help in creating and managing test groups...

@KotiSyamala - is there a particular partner integration tool like Litmus that you are using to check email previews? We do not currently have plans to offer this sort of API. 

@Selliers  the feature you are talking about is designed to be more visually friendly. The alternative exists to create an HTML block within your email where you can also access the condition builder and see the PQL code to insert different content. 

Are you looking at add custom metadata field to the channel actions or are you looking to augment fields for personalization. Some additional context on the usecase would be helpful! 

Message inbox feed is on our roadmap.. To accomplish today, you may b able to use code based channel on a scheduled basis to push new content into the app inbox location.