What do we want to see in ME3? asks gameinformer.

<p style="margin-left:50px;border-style:solid;border-width:1px;border-top-color:#ffffff;padding:5px;border-right-color:#bbbbbb;border-left-color:#ffffff;border-bottom-color:#bbbbbb;">We’d love to see an expansion of exploration elements in Mass Effect 3, capitalizing on the anomalies that showed up in Mass Effect 2. These occasional short missions were a delightful side trek from the main storyline. We’d enjoy seeing more of them, with more variety in what players can do on each planet. Neither the Mako concept or the mining feature needs to be totally removed; it’s the repetition of those features – and the frequency of totally empty or uninteresting planets – that hurts the experience. Combine the previous planetary exploration elements, add a few more varieties, and players will adore this element of gameplay.
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Combat in the Mass Effect franchise is fun, but can be simplistic. In Mass Effect 2, Shepard has a handful of weapons and ammo types to use in conjunction with limited control over AI companions. More meaningful strategic options would make the combat encounters more intense and satisfying, instead of just letting him or her bust into every room with guns blazing.

What do YOU want to see in ME3?

Also, there's free DLC.

Spotted at: GB