Magicians have been trying to make magic more and more visual for a long time now.
The sad truth is that right now, around 80% of the mind-bogglingly visual magic you see is gimmicks, very angle-sensitive, probably not suited for a real life performance with people all around. And I have a strong feeling that I've underquoted the number.
A lot of what Shin Lim does is really angle-sensitive and there's no way he would be able to pull off all of his AGT performances with an entire audience around him in a busker-style performance environment. He has different sort of effects for that situation. You'd also notice that the times he does NOT have control over the camera man's movements and areas focussed on(think the Ellen Show performances), he sticks to what are more classical magic effects (pick a card, think a number). It's a very smart tactic, because this way he has made a name for himself doing visual magic and yet gets away doing a basic ACAAN (of course I'm not undermining his technical expertise, which he has bucket-loads of).
There have been so many times where I am sitting at a table, across somebody, and secretly wishing that instead of dismissing lapping techniques (because I rarely sit at a table when I perform) I had mastered them. Catering to a particular situation is an important task. Though it may seem that learning a technique just for a very specific situation is too much work, remember, you never know.
In my opinion, if you want to build on something, you have to compromise something else. The more visual you make an effect, you probably have to compromise on it's angles (or its ease of performance).
Think like this: The Cardini Change is more visual than the Erdnase change (usually). Incidentally, the Cardini Change is also more angle-sensitive compared to the Erdnase Change.
You're right. Colour changes are your best bet. Check out the Erdnase Change tutorial on here available for free. It has great insights into how to make that simple change more visual. Check out the Rev, C3, Bertram and Cardini colour changes. Also look at the miscellaneous section in Expert Card Technique. The entire book, if read cover to cover, gives so much awesome magic based on pure technique, that I get severe mental indigestion if I read that book for a long time. It's too much. It's too good.
All the Best finding what you want.
