An essential feature, I'm confused how it didn't make MVP considering if the default setup (including dates fields) does not happen to correctly meet your needs then anyone viewing the roadmap plan which you configured will see a false view that is not accurate. 

What is the ETA on when this feature will be added?

It is really needed as this becomes a handover process having to customize each departments ARM and if there is an issue I would need to access their Jira to problem solve, although it is beneficial for each user to know how to set up the plan, it is time consuming and most cases Jira gives problems which affects issues pulling through. 

This is a fairly basic requirement.

Not only to share view with other users, but I as a user should be able to create a saved view in one plan, and then be able to apply that to another one of my own plans. 

As I would like to have a plan per project, currently its very time consuming to set up a new plan in the same way as a previous one

Definitely a needed feature since these plans are useful for sharing with key stakeholders who would not usually have direct access to manage Jira issues but would only view the project plan.