My player choose the cause that his brother is also involved, the kids who doesn't have the money or the opportunity to go to school and have a good education. In Quebec that's something that cost almost nothing since the government is paying a part of it and in our family it's something that is really important.
The jersey will featured some drawing of some kids that the cause helped so their rewards about not giving up and size the opportunity they have will be that. Those jersey will be signed by the player who wore it and sell it to charity so they will got some benefit out of it.
I do not think a teammates will be against giving some education to kids so to cause is welcomed. It is more about the jersey that cause problem since they don't know at all what it will look like and some of them are afraid that it will not fit with the colors of their gears. But I told them that there is many exemples of (really) bad jersey design and it's only for one game so it doesn't really matter in the end what we look like in it.