Increasing bitcoin supply will not be good for the future pricing of bitcoin. If the supply increased suddenly, it will have a very serious impact on the bitcoin price and also it will take longer to recover.
Not happy with this proposal, it may ruin the interest of public about bitcoin and also ruin the hopes of better future price. Especially those, who are thinking short term profit.
The impact of more supply would be depending on the law of demand and supply.
It there would be more supply, the demand would become low and the price will decrease since people doesn't have difficulty to find more bitcoins.