Just think of these as the minor problem area. It is the first Mac OS update that has only under the skin changes that may be worth the update. There is nothing that outwardly is better than that which was there before. Item after item is broke. Some of these like the scrolling direction can be usually easily fixed. Others like the lack of a scroll arrow is not so easily fixed. The only reason that I did the update is because we plan to purchase a couple new Macs in the near future. And as any very long time Mac User knows that means that we will only be able to run Lion or later.
Lion is the first of the Mac OS X updates that I do not think is better than the previous version. And I've used all of them from the OS X beta on to the last 10.7.2.
Every version of Mac OS X is so far better than the one before it.