With 8th ed on the horizon I find it not so necessary at this point for feedback on my prior request. However, I would like to share my experience with fighting Guilliman.
In preparation I intentionally built a static list that had little to no mobility. I was prepared to batten down the hatches and dig in. As far as fighting Guilliman it proved effective. I threw pretty much everything I could at hime for 2 rounds and he only took 1 wound. It wasn't until he got in range of my Fireblade and Warriors that whittled him down. That and a whole lot of luck as he never resurrected.
On the other hand it left me in trouble with scoring objectives. I couldn't move anywhere because my opponent was aggressively dropping pods and flying up to my front lines. While the game ended in a 13 to 5 Tau victory, it was only because a unit of terms failed a moral check that I was able to gain the upper hand.
Because those terms failed, when the game continued past turn 5 I was able to draw more objectives (malestrom: escalation). Because my opponent had nothing really left I had free reign to grab all my objectives. Lesson learned though. Always have maneuverability.