I recently posted 2 lessons to our website that perhaps you would be interested in considering related to Romans 14. I would especially appreciate hearing your thoughts if you disagree with anything stated therein.
Brotherly Love in Matters of Indifference, Part 1
Brotherly Love in Matters of Indifference, Part 2
In case you were curious as to an example I used in the lessons, the church here actually lost 2 families almost 20 years ago over a fuss about eating in the building. I was only about 13 at the time it happened, but I remember the sad situation vividly and the mistakes that were made in handling it.