I think a lot of hard-core Star Wars fans don't realise is that this show is mostly watched by young children who would never have read the books/comics and are only familiar with the characters of Anakin and Obi-Wan. If you take them out of the main narrative of TCW then I think a lot of people would lose interest. I know I certainly wouldn't be interested in this show if Anakin and Obi-Wan didn't have such prominent roles. They are also the most popular and well known Jedi if you go by the books, it makes sense for them to be heavily involved in TCW. The Clone Wars isn't just about the war either. It's about all the little events that happen during the war which came about because of the war, even if its not directly related to the war at large. It's all part of it. Except for maybe the tea.