Ability to add tooltip on the stages displayed on Idea portal to be able to display expected timelines for the stages
While we don't have tooltip functionality available, it is possible to populate a custom field in your ideas portal to communicate timing to your stakeholders. We handle this in a similar way by using a custom field which we populate internally with the time frame we expect to deliver given ideas.
You can add a custom field and select the layout for the idea portal and idea layout to do so. You can learn more about it here: https://www.aha.io/support/roadmaps/strategic-roadmaps/customizations/custom-fields