One simple, more practical area where things are different is with member selection. This may seem trivial, but it is learning small things like this that make using the product easier to pick up. You focus more on what you're doing vs. wasting time on how to do it.

In Enterprise, member selection was a simple dialog box with a list or hierarchy of members, you select one, and click OK. Sorry, I don't have Enterprise up and running to show a screenshot.

In HFM, member selection is typically a dual sided dialog box with available choices on the left and the selected item(s) on the right and clicking the chevrons (not shown below) in the middle to add/delete or select a relationship.

In FCCS, and I'm pretty sure the same goes for EPBCS/PBCS as well, member selection works a little different. There are two main flavors.

This first example is from journals. There are tabs across the top for each dimension instead of the dropdown of HFM. Start from the left and click on parent members to drill down to the children in the next column - if you keep clicking, like on USA, the screen scrolls to the right to keep drilling down. But the question comes: how do you select a member? In the screenshot, there are three entities selected (gray boxes) - which one will be in the point of view when OK is clicked?

The answer is none of them! The selected entity is Latin America in the center column - note the checkmark to the left of the label. So, to select an entity, you must click the whitespace to the left of the member to place the checkmark. Clicking the entity itself does not place the checkmark. Think Smart View member selection, where you have to click the box and then click the chevron.

The other primary member selection box is seen in intercompany matching reports, where a relationship (think list in HFM and Enterprise) is needed. This screen has the same columns (in the middle and right) for the drill down as above and the same blue checkmark (see North America in the right column), but the additional bit shows in the LEFT column. 

This column shows a relationship selection. To do this, hover over a specific "anchor" member and the fx icon will appear. When clicked, the various relationships will appear. The equivalent of "base" members is "Level 0 Descendants," which highlights the Essbase underpinnings of the product.

Note that multiple items can be added to the left, whereas HFM typically would only allow one list/relationship to be added to the point of view.

Also, as seen in the bottom of the second screenshot above, this panel can be toggled from Members to other choices depending on the design of the application.

A huge benefit to all of this is you can do this from your phone/tablet. This screenshot was taken from an Apple iPhone using the standard Safari web browser.

Member selection is a little different, just like Enterprise to HFM was a little different but in the end you get what you need.