The intrusiveness of the source of wealth requests have made it a negative impact for me. The what seems endless supplies of documents goes a little too far in my opinion. When Skrill transactions to and from a single UK bank account are not sufficient, you are left to think what other purpose there is considering that UK banks already have very stringent money laundering tools in place that would and should have caught any wrongdoing way before the casinos touch the money.
This is actually one of the things I expected to come up more - the documentation / KYC stuff. The idea of signing up to somewhere new and having to do all the KYC before I can deposit would put me off because historically when I have done this I don't know if the operation is going to be what I am looking for at that stage. I preferred to play for a while, see how they do things then decide whether to stick around.