There are several measures adopted by the government of Quebec that would be deserving of harmonization by CRA. For one thing, there is the purchase of an income-averaging annuity for arts income, which is a very important measure that allows exceptional income to be averaged over several tax years. That kind of harmonization would really be important.
As well, there is a measure that allows for a tax deduction for all copyright income. That reduces the taxation of that type of income, which is derived from the use of artists' work.
It really would be a good thing if those measures applied Canada-wide, to all artists who work to promote our culture.