Without animation, you wouldn't even have the game Runescape, let alone every other Rs video or video game on the internet. Animations can make or break your Rs music videos. Using them too much could make your video to confusing. Using them too little and your video may seem "old school" to viewers. How can you tell where the happy medium is?
Find a very basic animation to add in-between every video clip. Make sure it is one that will keep the video flowing, but won't distract the viewer when watching the video. Something like a fading animation would do the trick.
Add in some different animations here and there, but only a couple to keep it clean. Then add in different color animations, lighting features, and writing to complete the video. Make sure everything is kept clean, elegant, and fresh.