@BrandCommerce
I think it depends on what you mean by traffic increase.
If your traffic is expected to increase consistently over time, it might be worth switching to Magento 2 Commerce.
However, if your traffic will increase only a few times throughout the year such as Black Friday or marketing campaign etc you might end up underusing your e-commerce infrastructure and paying more than you need to. In that case, I would recommend looking at some of the extensions available from the Magento Marketplace to safeguard your website during traffic peaks, like Queue-it.
Hope this helps.