As a merchant I like the idea of Stripe being a hub. But on principle and as an individual who worries about centralization by finance organization will just support the horrendous economic framework we have today, my concern would be that the majority and largest hubs will be from the traditional banking industry. This is the exact opposite of the principles of Bitcoin.
That being said, the ability for a merchant to have both fiat credit card payment and cryptocurrency payment from one service would for practical reasons (at this time) motivate me to use Stripe (if they used Litecoin or Bitcoin Cash).