I was going to install/mantain around 130 sites which should be nearly the same: same roles, users (but users have diferent roles in every site), menus, blocks..... I am using a modifications of "multisite manager" and "rollout" to create them.
Is there any problem sharing any of the tables? - users: no problem - roles: ? - menus: ? - views: ? - sequences: no problem - sessions: no problem - system: ? - url_alias: ?
My major concern right now is about sharing views; I know it is easy to import/export them, but being able to automatically have the new view in every site would be great.