I think you should consider getting into QlikView development. I can't talk about my personal experience, but suffice it to say it is growing like wildfire and

I think you should consider getting into QlikView development. I can't talk about my personal experience, but suffice it to say it is growing like wildfire and the idea is very similar to what you're describing. I think it would be hard to get into this field with completely custom built apps, because maintenance will kill you in the long run.