Oh wow I'm glad. You definitely should consider it. It can be great fun.
I briefly touched on the subect of over saturation, and yes if you do the same ting over and over for multiple clients it can get boring and old very quickly. But that's where as a creative the challenge comes in and it's up to you to mix it up a bit. I use after effects and on there you can change the style, shape and look completely, you can also mix it up by adding background animations or overlays, try experimenting with getting some creative commons footage, 2 or 3 clips, and playing around with layers, blend modes and effects. You'll be surprised at what you can make and it's really fun. There is tons of amazing tutorials on youtube which help you see how different visualizers can look.