@emanuele
I don't think I'm missing a hook to affect this DB query because there's no variable: https://github.com/elkarte/Elkarte/blob/5fe7f404bb3b4c5e9a570edc48207c6cde663429/sources/subs/Members.subs.php#L1160-L1164
In other words, I don't think I can convert this source mod into a hook:
<operation>
<search position="replace"><![CDATA[
mem.id_member, mem.member_name, mem.real_name, mem.email_address, mem.icq, mem.aim, mem.yim, mem.msn, mem.member_ip, mem.member_ip2, mem.last_login,]]></search>
<add><![CDATA[
mem.id_member, mem.member_name, mem.real_name, mem.email_address, mem.icq, mem.aim, mem.yim, mem.msn, mem.member_ip, mem.member_ip2, mem.last_login, mem.is_spammer,]]></add>
</operation>
Here it is updated for Elk:
<operation>
<search position="before"><![CDATA[
mem.id_member, mem.member_name, mem.real_name, mem.email_address, mem.member_ip, mem.member_ip2, mem.last_login,
mem.posts, mem.is_activated, mem.date_registered, mem.id_group, mem.additional_groups, mg.group_name]]></search>
<add><![CDATA[, mem.is_spammer]]></add>
</operation>
https://github.com/Frenzie/elk-stop-spammer/blob/19cb36458059393ede9fa7635ec6c6a1526d84e4/install_2.xml#L54-L72
Given that this only affects admins and moderators I suppose adding a whole extra query wouldn't really matter, but still.