Would it be possible to have NEXT and BACK buttons at the top and/or bottom of multipage posts? The '1','2' and '3' are useful, but small. Come to think of it a FIRST and LAST might be useful.

Agreed, the Pages 1,2,3... etc. at the bottom of the list of topics are too small, it's easy to miss them and hit the Hop To drop-down instead.

Is it possible to return to the LAST page of a thead after posting rather than the first, I can't see any point on going back to the first page if a thread is any more than a page long.

SIDC forums does just that, so it should be possible.