Support for imapfilter LUA syntax, automatic tag on reception and default layout

Dear Benny,

Like many before me, I discover MailMate for now a couple of days and I confess I'm rather impressed by it ;)
I just have a couple of perhaps naive questions / wishes I hope you (or others) can help me with.

Current tested version: Version 1.7.2 (3905), under Max OS 10.9.1.

1/ I use imapfilter to sort my mails - I was seduced by the LUA syntax to specify in a "generic" way (i.e. independent of a specific mail client) the sorting rules (using logical '+', '*', '!' etc. - see sample config) and to have access to "classic" regular expressions to match patterns on subject, to, from etc. fields.

Ex:

    source = 'INBOX'
    function sortGenericAlerts(mbox)
       local results = UL[source]:contain_subject('[Bug ')                           +
          UL[source]:contain_subject('[Bugzilla Reminder]')                          +
          UL[source]:contain_from('logcheck')                                        +
          UL[source]:contain_from('logwatch')                                        +
          UL[source]:match_subject('^.*\\[rkhunter\\] .*$')                          +
          UL[source]:contain_subject('DenyHosts Report')                             +
          UL[source]:contain_subject('Anacron job ')                                 +
          UL[source]:contain_subject('exim paniclog on')                             +
          UL[source]:contain_subject('apt-listchanges: ')                            +
          UL[source]:contain_from('Cron Daemon')                                     +
          UL[source]:match_from('^Cron <')                                           +
          UL[source]:contain_from('Local Debian archive mirror')                     +
          UL[source]:contain_subject('package update(s) for')                        +
          UL[source]:contain_subject('*** SECURITY')                                 +
          UL[source]:contain_subject('WARNING: (yaBackup)')                          +
    
       results:mark_seen()
       results:move_messages(UL[mbox], results)
    end   
    
    [...]
    
    sortGenericAlerts('INBOX/Alerts')

Would it be possible to somehow rely on the same syntax (or closed one) to define rules for MailMate? I could imagine a file-based structure under ~/Library/Application Support/MailMate/Resources/Rules/ (similar to the one used for keybindings) where the rule <rulename>.plist could have the content

{
    "rule" = {
          contain_subject('[Bugzilla Reminder]')                          +
          contain_from('logcheck')                                        +
          contain_from('logwatch')                                        +
          match_subject('^.*\\[rkhunter\\] .*$')                          +
          contain_subject('DenyHosts Report')                             +
          contain_subject('Anacron job ')                                 +
          contain_subject('exim paniclog on')                             +
          contain_subject('apt-listchanges: ')                            +
          contain_from('Cron Daemon')                                     +
          match_from('^Cron <')                                           +
          contain_from('Local Debian archive mirror')                     +
          contain_subject('package update(s) for')                        +
          contain_subject('*** SECURITY')                                 +
          contain_subject('WARNING: (yaBackup)')            
     };
     "action" = ( "moveToMailbox:", "/INBOX/Alerts" ); 
}

In all cases, while I checked the "Experimental 2.0 Feature" in the General preferences of MailMate (and relaunched it), I cannot see any 'Rules' panel where I can specify my automatic actions on the incoming messages, especially for automatic tagging. Have I missed something ?

2/ I'm surprised I have to redefine by default for every mailbox the column layout I wish (to add for instance the 'Security' and 'Source Mailbox' column. Isn't there a way to precise a default layout ?

3/ How can I format the way the source mailbox is formatted ? I coun't find it in the preference pane.

Thanks!