Currently, we’re able to set the default view for a portfolio/project for all members–this is great. It’d be great to also be able to 1) choose your own default view (all users) and 2) choose the default view for specific groups of users (admins only).
The alternative is for members to find the right work themselves OR for managers to create separate, focused portfolios/projects for each group 
‘Dynamic’ default views would benefit managers and members of projects/portfolios with diverse audiences by elevating what’s most important for each group without compromising the centralization of related work (projects and sub-portfolios or tasks).