This is a difficult question to answer. I am interested in a car. Can you send me pictures for inspiration? The look and feel of a church facility is highly personal to the mission and vision of the church body it serves. If I were asked that question, I would want to know the "heartbeat" or values most important to the congregation. Some are put off by traditional design, to others it is inspiring.
There are plentiful examples in the Atlanta metro area of excellence in church design. My personal preference is for contemporary interpretations of mass and the control of light with color and texture. So my recommendations will lean that way.
On the contemporary side, I am familliar with Free Chapel there (freechapel.org). Free Chapel has campuses in Gainsville and Gwinnett.
A firm called CDH Partners is a quite prolific Church designer there. Some of their portfolio works might be interesting for your client:
http://www.cdhpartners.com/projects/religious/worship-centers Enjoy!
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Gordon Rogers AIA
EAS Department Executive
Kitchell CEM, Inc.
Sacramento CA
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