I've taken a good look at what's being done in other countries; I'm doing an exhaustive piece of research on the subject.
The tax gifts offered to donors in Canada are significant. Perhaps you should ask yourselves whether donors should be rewarded to that degree. This is an issue that you should probably consider socially. However, since it's quite clear that the charitable sector is important, you should avoid making decisions that would make it less important. Consequently, it has to be made tax-effective, which it currently is not.