I tried! And failed miserably, but asking on #dreamwidth prompted Afuna to help me make it work! She is the best, yup.

Anyway, should be able to copy-paste this into your theme layer:

===============================
##Moodtheme image on left mmmag (http://style-system.dreamwidth.org/15122.html?thread=88594) + add tags to the metadata, thanks to Afuna's awesome (#dreamwidth)
##===============================

function Entry::print_metadata()
{
# ---------------------------------------------------- CUSTOMIZATION ---------------------------------------------------- #

var bool show_loc_link = false; # set to true to display the Google Map link

var bool show_groups_link = true; # set to true to display the custom friends group link

var bool show_music_link = true; # set to false to hide the last.fm link to the artist/song pages

var bool print_table = true; # set to false to display the mood icon inline with the mood text (default FS style)

var string alignment = "left"; # set the side of the mood icon (left or right of the currents) - only if printed in table

# set the order in which you want mood, music, location, tags, security and custom friends group to appear
# any metadata you want to hide journalwide, delete from this list
var string[] metaorder = ["mood", "music", "groups", "location" ];

# optional:
# put in the URLs to the pics you want to use instead of the currents' text labels
# if you leave it blank, the text label will be used instead
var string{} metapics = { "mood" => "IMAGE URL",
"music" => "IMAGE URL",
"location" => "IMAGE URL",
"groups" => "IMAGE URL" };


# ---------------------------------------------------- CUSTOMIZATION END ---------------------------------------------------- #

var string currents = """<div class="metadata">\n""";# here all metadata will be added to print currents container



if (size $.metadata) {


# display mood and moodicon?
var bool display_mood = false;
foreach var string moodtest ($metaorder) {
if ($moodtest == "mood") { $display_mood = true; }
}

# table and mood icon
if (defined $.mood_icon and $display_mood and $print_table) {
$currents = ($alignment == "left") ?
$currents + """<table border="0"><tr><td width="$.mood_icon.width"><img src="$.mood_icon.url" width="$.mood_icon.width" height="$.mood_icon.height" alt="$.metadata{"mood"}" title="$.metadata{"mood"}" /></td><td>""" :
$currents + """<table border="0"><tr><td>""";
}

# step through metadata in the order the user wants
foreach var string k ($metaorder) {

var string text; # the actual value of the metadata
var string label; # the label of the metadata as set in the wizard or set-statements


# handling all other metadata
if ($k != "" and $.metadata{$k} != "") {

# metadata value
$text = $.metadata{$k};

# label as image or text
$label = clean_url($metapics{$k}) != "" ? "<img src=\"$metapics{$k}\" title=\"" + lang_metadata_title($k) + "\" alt=\"" + lang_metadata_title($k) + "\" border=0>" : lang_metadata_title($k);

# strip location/music/groups link
if ((not ($show_loc_link) and ($k == "location"))
or (not ($show_music_link) and ($k == "music"))
or (not ($show_groups_link) and ($k == "groups"))) {
$text = striphtml($text);
}

# inline mood image
if (not ($print_table) and $k == "mood" and defined $.mood_icon) {
$text = """<img src="$.mood_icon.url" width="$.mood_icon.width" height="$.mood_icon.height" alt="$.metadata{"mood"}" title="$.metadata{"mood"}" align="middle" />""" + $text;
}

} #end metadata

# skipping empty metadata
else { continue; }

# assemble the individual currents
$currents = $currents + """<div><span class="metadata-label metadata-label-$k">$label:</span> <span class="metadata-item metadata-item-$k">$text</span></div>""";

} # end foreach

println $currents;
$this->print_tags();


# table and mood icon
if ($display_mood and defined $.mood_icon and $print_table) {
$currents = ($alignment == "left") ?
"""</td></tr></table>""" :
"""</td><td width="$.mood_icon.width"><img src="$.mood_icon.url" width="$.mood_icon.width" height="$.mood_icon.height" alt="$.metadata{"mood"}" title="$.metadata{"mood"}" /></td></tr></table>""";
}

# close currents container and print
println $currents + """</div>\n""";
}
}


##===============================
## Removing the second tags box thanks to Afuna (#dreamwidth)
##===============================
function Page::print_entry(Entry e)
"The meat of each new layout. Describes how each page will look. In nearly all cases, the logic and decision-making processes should come from pre-existing functions in core2, and should not get written here. If you limit the structure of the page to HTML, function calls, and attached CSS, then you will be able to pick up all of the enhancements and accessibility requirements managed by core2."
{
## For most styles, this will be overridden by FriendsPage::print_entry and such.
$e->print_wrapper_start();
"""<div class="header">\n""";
"""<div class="inner">\n""";
$e->print_subject();
$e->print_metatypes();
$e->print_time();
"""</div>\n""";
"""</div>\n""";
"""<div>\n""";
"""<div class="contents">\n""";
"""<div class="inner">\n""";
$e->print_userpic();
$e->print_poster();
if ($*entry_metadata_position == "top") { $e->print_metadata(); }
$e->print_text();
if ($*entry_metadata_position == "bottom") { $e->print_metadata(); }
"""</div>\n""";
"""</div>\n""";
"""</div>\n""";

"""<div class="footer">\n""";
"""<div class="inner">\n""";
$this->print_entry_footer($e);
"</div>\n</div>\n";

$e->print_wrapper_end();