Please do continue, out of the problems you listed I only have seen the NPC pathing problem - and that's been acknowledged by Mythic already in the beta (patch pending(tm)).

There are bugs in the WAR - as there are bugs in all games. So far I haven't really seen anything game breaking though and I believe they've been hotfixing/patching some issues already.

When it comes to 3rd party addons - no, you don't need it and you can enjoy the game just fine without it. The addons are there (just like in WoW and other games) to let community to build on the product.