I do lot of screen cast tutorial videos. I use the title clip to highlight screen area, i.e. by drawing a box or put additional information. I wish I can easily make the title clip to blink.

I'm think of a feature in the Animation tab which has a small timeline box and user can define the fade in and out ramps. There's a "repeat" parameter which allows user to specify the frequency. The duration of each cycle will adapt to the clip duration automatically