I’ve blogged in the past on how I’d remarry Christian divorcees who seek to glorify God in their marriage. To make it absolutely clear to everyone involved, I separate the civil and ceremonial aspects of marriage. By marrying at the registrars and then at church a couple, where one or both are divorced, make a clear declaration that theirs is a Christian marriage. I assume that those who do not wish to glorify God in their marriage will choose just to have a civil ceremony.
Don Carson has written a helpful piece on the marriage of co-habiting couples. What he writes about the French system and the desire to avoid a Catholic theology of marriage as a sacrament is helpful, I believe, when thinking about the remarriage of divorcees.