I request that there be the ability to create groups of users in enterprise security so that when you need to add them to an investigation you dont have go to through and select your whole team individually, instead you can have group that have those people in them, like group IR and group SOC. If you have team of more than 3 people it gets old having to add them all individually.
I would also request a notes section where you can place notes on the investigation for all collaborators to see.
That's what https://ideas.splunk.com is for.