i have been to kaesora once with a full group of lvl 40 people, we had a
ranger, cleric, enchanter, bard (me), monk and a druid, and we did very fine
camping the library, the area behind the library and the hut. just be
careful and pull slowly, keep the crowd under control. the most nasty
problem there are the warders, that start to heal from a long distance and
tend to aggro afterwards, running a long way to your group and bringing a
lot of friends. just keep your eyes peeled for warders, if you can control
them, you control the library.
be safe all, take care!

cheers
tobi, lvl 40 smurf
<tod und teufel>
tholuxe paells