Enable trading pair from the pool

Let's say, If I have TZERO but no FIRE and I go to the TZERO-FIRE pool, but realize that I can't add liquidity, so I think if there's a button in the pair that says "trade pair" with pop up to enable me to swap TZERO to FIRE then I won't need to leave the site to get fire and add to liquidity. I think it would be a nice feature.