Allow a single Membership Pro membership to have multiple pricing options

I'd like to have a single membership type and then be able to offer separate pricing. Right now, I must have multiple memberships for this to work (and that causes more work in managing the access rules).

For example, I have a membership for a monthly fee of $77. I then have the exact same "membership" that is defined as quarterly for $225. And then another for annual at $850. So, in this case I would need to manage the same access for people in three different memberships. Because the former version had a membership subscription separate from the membership rules setup, I could have multiple subscriptions that used the same rule set. I miss it!

Thanks.

Danita