Regarding a decrease in capital gains, no. Exemptions for capital gains are important in the case of a transfer because as you heard, you need $8 in assets in Canada to generate $1 of revenue. In certain cases in Quebec, it even goes up to $15 in assets for $1 in revenue. If you eliminate the capital gains exemptions, you will complicate these intergenerational transactions a great deal, and even those between parties that are not related.
On May 9th, 2017. See this statement in context.