<p>It's very painful to add multiple tickets to Trac or to have it as your own todo list. That causes people to use their own task management tools so tasks are then spread all around.</p>

<p>Is there any plugin or macro that would quicken the process of adding a ticket?</p>

If you're using Eclipse:
Mylyn
is perfect.
Otherwise you could always get the XML RPC plugin.
http://trac-hacks.org/wiki/XmlRpcPlugin
and roll your own little tool.
For quickly creating similar tickets, you could use the Clone plugin:
http://trac-hacks.org/wiki/CloneTicketPlugin
Edit
And I second Espen's idea with the SVN
checkin hook
, it works great for us, as well.