What I noticed with templates like JomSocial is that is more for creating a social network among Community members. That allows all Users to post, to some extent like the Facebook.
The idea of the website that we are looking for is just an information website with the regular Joomla login, not a full fledge profile for each User. Because our audience is mostly elderly folks and they would not be comfortable with those features.
Simple website with the following features:
1. Home page with Latest News and Updates, Upcoming Events, an Image Slider, Main menu - something like what K2 offers
2. A Newsletter section with archived Newsletters also. We use MailChimp. So we like to post the PDF copies of old NLs and the html version of the current newsletter.
3. A newsletter signup page (that updates the MailChimp - API call)
4. A page for "Meet the Team" which could be a static page of Committee members, 6 boxes in two rows or something with their images of current and previous, perhaps the previous ones in an accordion.
5. A Gallery with login access restriction after the first 5 or 10 pictures.
6. A Contact Form, About us etc.
I am sure if you make one, there will be lot of demand for such a simple template.
Also we noticed that, as @supergran mentioned, when we add extensions from different vendors, they don't all work well together. I have tried Image slider, plus K2 and another plugin for upcoming events. But then the menu scroll down won't appear on top of the new image slider, the K2 contents can not placed on the home page, the upcoming events can not placed on the front page, but only on other pages... etc...etc... so many problems!
Any help would be greatly appreciated.