It gets a little frustrating to have to click twice and scroll every time a new PM is added to a multi page PM thread, is it possible to get a little "go to the last post" arrow in the PMs like there are on the forum posts?
You already have this feature, basically; it's at the upper right of each PM. "Reverse" is what it's called. It stacks the posts with most recent on top.
I like the forum threads reversed, I guess I am just used to it that way. I always scroll to the bottom to figure out what is going on and then if I want to catch up on a thread I just have to read the last few posts that I have missed.
What annoys me though is that when you reverse PM's, it also reverses threads in the forums automatically which is very confusing!
The point here is you can reverse/revert at will, and it's faster than scrolling a multi-page message. So if you prefer to keep things in default order, just do the reverse as needed, and revert when done.
I hadn't really noticed the reverse link TBH, though it just leaves me with more clicks again rather than just clicking on the little arrow and going straight to where I want to be. Also, if several PMs have been added to the PM thread I still have to scroll, a minor inconvenience, but annoying yet still a pretty easy thing to fix. It also adds continuity for users as then the PM system works in the same way as the forums.