Hi.
Leipzig is actually my home airport. But neither DRS or LEJ offer a very large choice of connections. Actually only LEJ offers some flights to FRA and MUC (via LH) and to AMS and ZRH (via Darwin / Ethiad Regional). DRS offers mostly to FRA and MUC (via LH). But as you are flying in Y class MM - in my opinion - does not offer you a good value. In the last years they downgraded especially when flying LH / LX / UA.
Instead, may I suggest that you consider flying to FRA by AA / BA / US and connect by train to LEJ / DRS? It is only a 4 hour ride. The ICE train cabine is pretty comfy and you can book your Rail & Fly ticket for as little as 29 Euro.
Have fun enjoying LEJ/DRS - its a hell of a beautiful city