Thanks for starting this thread. We're looking at EVERYTHING today (and through the weekend). Regarding rewards, Missions and Rewards both are randomized each day, so it'll be a few days before we have enough data to compare how things are shaking out vs how they were. But we'll keep looking at it and make changes as necessary.
Similar feedback regarding pop near the Shattered Warpgate - right now there's a RUSH to fight around the new area, but I'd expect that will calm down a little bit in a few days. We'll watch and see.
And we definitely have plans to keep adding and diversifying Mission types, both the standard dailies and future Campaign (story) Missions. Many of the newest ones were added late in the process, and we're going to want to see how they perform, how fun/popular they are, etc over the next days and weeks. But more are coming, definitely.