Well done 3dice for opening up this thread and showing some genuine interest in how your players feel.
Here is my tuppenceworth on the bonus issue.
I would scrap the sign up bonus and offer a cashback bonus with no
WR if the total deposit was lost and no withdrawal made.
The only added condition on receiving this cashback would be another deposit of at least the cashback amount.
I would start with say 20% cashback on the 1st deposit and increase this by 10% each following deposit, thus encouraging and rewarding loyalty.
You can do the sums of how many cashback offers could be made and how much(as regards risk management) but I feel this would be a much fairer system.
Also it is not open to abuse and while being attractive to the genuine player it would be of little use to "bonus abusers"
Obviously B&M casinos get a lot of local traffic which does not apply to remote Casinos so if you want loyalty you will have to give a little something extra back and sign up bonuses with T&C's a mile long are not the answer.
Bookmarks