I love the Eagle, it's my favorite ship to fly. I love its light, agile handling characteristics.
It absolutely does not need more speed. It does exactly what it is designed to do - introduces new players to combat, and provides a friendly, low-skill-floor, passably capable fighter in which they can learn the tricks of the trade before they move up to the much-less-forgiving Viper.
This is its role. It performs this role quite well. It's easy to obtain, easy to kit out, and easy to fly, but it's also limited. Eventually you have to graduate from your Eagle into something more capable but more difficult to handle. That's as it should be.
Now, I'd have absolutely no objection to introducing another combat ship with Eagle-ish looks, Eagle-ish maneuverability, more firepower, more speed, and a little more toughness - but that ship would have to cost vastly more than an Eagle.