Project Online needs the ability to restrict views. Allowing all users to see project cost information makes Project Online in-usable.

Support Email:
Hi Lyn,

I tried to call you but nobody was answering the phone, so I left a voicemail message indicating that I will contact you via your email instead.
This is regarding to the issue you logged about sharing a specific view only in Project Online. We understand that you need this so I've checked my resources, talked to my manager, my co-support engineers within the globe and I've found out that this is product limitation. We can share the project site but not supported in the specific view of the project. So, if you want to add this feature to Office 365 you can log it in this link, https://office365.uservoice.com/. Thank you.
Thank you,
Shella Deomampo
Office 365 Support