AutoCAD LT 2010 is stuffed full of what I like to call "little big" features -- things that don't take very long to explain or learn, but which will make enormous differences in your day-to-day work.
One of these "little" features is the ability to edit the boundary of a non-associative hatch object.
Let's say that I have a hatch object that for whatever reason isn't filling its boundary the way it should:
Until now, if you selected that hatch object, all you got was one (unhelpful) grip:
And your only choice was to erase the hatch and start over. Let's see what happens when I select that same hatch in LT 2010:
Look at all those grips! The large square ones can be used to move corners, while the rectangular ones in the middle of each side can be used to add vertices or convert sides between line and arcs. Check it out:
Now, that's not getting as much attention as the PDF improvements (or as parametrics and freeform over on the AutoCAD side), but it's still an impressive time-saver!