Thanks for voting and commenting! This issue is being addressed as part of the all new Portfolio live plans, which feature an entirely overhauled and more seamless integration model with JIRA Software / Agile. Live plans are currently available as a labs feature for both Server* and Cloud, so you can start evaluating them without any risk of impacting existing Portfolio plans. They are not yet feature-complete, we're working on bringing all major capabilities of standard plans back into live plans on top of the new integration model before we graduate live plans out of labs and make them the new standard way of working.
Please check out this blog for a summary and short videos of how the top-voted suggestions are being addressed with live plans: Top 10 suggestions addressed in live plans and join our Portfolio Pioneers LinkedIn group to discuss feedback and best practices!
Principal Product Manager, Portfolio for JIRA
*The live plans labs feature is available with Portfolio for JIRA 1.12 or higher. It is compatible with JIRA Software 7.0.5 or higher, and JIRA 6.3 or higher, in association with JIRA Agile 6.7.12 or higher.