Should I share permissions?
Hello guys.
I will build 2 sites and I will use miltisite for this project. They are pretty much the same, they will use the same theme too. The only difference is that one of them will have BR language content and the other will have ENG language content. Each of them will have its own domain, so they need to be 2 different sites.
I've already decided to share user and session tables among them, so that anybody can register on any of them and once logged on one be logged on the other too.
I will install Drupal using the tutorial at http://drupal.org/node/291373, and share the following tables:
<?php
$db_url = 'mysqli://user:password@localhost/drupal_site1';
$db_prefix = array(
'default' => '',
'authmap' => 'drupal_shared_tables.',
'profile_fields' => 'drupal_shared_tables.',
'profile_values' => 'drupal_shared_tables.',
'role' => 'drupal_shared_tables.',
'sessions' => 'drupal_shared_tables.',
'users' => 'drupal_shared_tables.',
);
?>My question is: should I share roles and permissions too?
I don't believe they will be enough different to need different modules, only if later I find a module related to language and translation that I might want to use on only 1 of them and CAN'T install on the other. If this situation doesn't show up, they will have the same modules and the same look for sure, differing only on nodes content and blocks position.
What do you guys think on sharing permissions on this situation? I'd like to do so because it would make permissions config much simpler.
Another question: is it possible to share these tables, but leave users and roles relation separated?
I mean, User5 is inside Editor rule on siteBR.com, but not on SiteENG.com. Is that possible?
And which tables must be shared on these situations?
tnx for the help :)

*_*
I am not demoralising you, but I would rather suggest that you set up clones of your proposed websites in a local system, play around it and find out which is the best for you.
If you do this on your live website, chances of getting the sites messed up are high.
If you share your experience with community members, it can help a million. :)
Regards.
:)
Beautifulmind