CPS allows themers and designers to create a simplified pool of ready-made styles for site builders to choose from when laying out their pages. These translate directly to template and class changes in the DOM in a predictable way.
Goto Last Page defaults to the last page of comments (instead of the first one) for configurable node types.
This is useful if you have a lot of comments /maybe threaded) for a node and want the user to immediately show the most recent one.
It also allows adding a custom fragment (like #comments) to pager links, so the user will go straight to comments section while paging through comments.