A Meteor/Enchantress using Energy Shield can solo Uber Tristram, so they can be a very formidable force indeed. I mean, smurf, nearing the 70k to 80k consistent damage output is something to be feared in Vanilla Diablo.

If you don't want to deal with the terrible online environment, download PlugY and you will be able to still perform and experience much of what the server-only environment entails. However, there are still some definite differences that have yet - and most likely never will be fully - addressed.