I went without for the first time in awhile at the last Tournament I played in. Aside from getting Kivas Fajo - Collector played against me multiple times with no Mirror Image to grab, I didn't miss it.
For me, it comes down to economics: If I assume that I'm going to use a Q's Tent regardless, and I'm going to use Defend Homeworld for the Security download, then Civil Was Tent + Tribunal make sense since I'm getting the same functionality plus a bunch of situational defensive cards for the same seed card cost. It gives me options.
Also, If I'm playing a solver with a Homeworld, just knowing that I can get Strategema tends to keep my opponent away and let me operate.
On the other hand, I wanted to have more dilemmas in my Borg deck and the DH download wasn't needed, so I went without and redirected the seed slot I would have used on Tribunal into my 18th dilemma, which allowed me to put three cards under each of my opponent's missions (Also allowed me to get the no
achievement)
Finally, the one
card I do like to pull out (besides Mirror Image) is
Containment Field. Against
and the new
builds, it's important to prevent things from getting too silly. If there's any
left that would benefit from OTF incorporation, it's that one.