Have its strengths and weaknesses
All the fun in RF is in the end game. The best gear, raids, fortress sieges and so on. If you want to get to the top level follow this simple three steps RF leveling guide that can help you.
This is arguably the most important step. Each class has its strengths and weaknesses and in order to truly master RF you need to study them. In particular for this guide, you need to know the best way to make the largest amount of RF CP with the least down time.