My experience is that there's always a limited number of muns who are interested in 'team building' for a unified front in games like this, but there are ones who like the idea in general. However, similarly there's usually a lot of independently minded characters that aren't going to like the idea.

You're probably going to have the greatest success in the largest houses, and more trouble in the smaller houses like Thor and Baldr, simply because of a lower pool of members to work with.