I just finished "Doxology, a Systematic Theology," by Wainwright.
My level of appreciation (and review length) is obviously impacted by my having been raised, and always practiced, low-church. My friends who have been entrenched for some time in a higher-church environment will love it.
I really enjoyed his section on Christ and culture. But there he was working off of Niebuhr's book of the same name. So I will add Niebuhr to the short stack.
His section on violence was all over the place. To dismiss "the passive Christ" he prooftexted from the OT and ended his justification of fighting wars in a very "in the name of Christ" way. Yes, he quite skipped over that whole inconvenient "love your enemies" thing.
In the end, his systematic theology using liturgy as a constructive framework seemed forced and not very systematic. I'm not suggesting that it doesnt "work," it does. It just didnt work very well for him. This is my third book this year of this nature, so I am possibly just over this form of ST.