Though I know several people who have - and they all come back feeling inspired. It's definitely on my wish list. 
I used to go to an Alanon group regularly when I first started out, but it conflicted with the women's group where my sponsor found me. She told me that I should go back to the women's group and she was right, there are women with 20, 30 even 40 years who attend that meeting regularly and I really needed to learn from them - still do. 
My other "home group" is a beginners' group - I celebrated my first year there and it is my chance to give back. There's a whole lot of turnover, the meetings are at a halfway house. My As Bill Sees It Group moved there and I followed it. A lot of the people who attend are mandated - many in County Drug Treatment Court - live either at the halfway house or in "supportive living" the next stage in that program. The girl who was the GSR and ordered the coins (we give out 24 hours up to 11 months on Mondays and Fridays) graduated from Drug Court, quit going to meetings, went back out and ended up in a world of legal hurt, and since I was the only one around with enough time to qualify as GSR, I took over both jobs and have wondered if I'll be doing it forever since a lot who go to those meetings just got out of rehab... but it's not a lot to ask and it sure keeps it green for me...
And we sure could use a few more "old timers" like you at any of our meetings. I bring it up at every district meeting when they ask what our groups need - there are 4 meetings a week there and one is a step meeting and it's tough if there are only beginners there. My district is notorious for people not stepping up, my fellow GSR from the women's meeting just found someone else to take over, she was GSR a lot longer than I have been.
Your area - and you - sound a lot more proactive than we are here. And I can identify with the religion issue. My sponsor is Jewish and not much more religious than I am so it works well for both of us. I sometimes get frustrated by those who conflate religion and spirituality, but I figure whatever works for someone else should be okay with me - I've learned to "take what I want and leave the rest..." 
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