I think of 3 units - Bastiladon, Skink Starpriest and a Saurus Guards.
I love how Bastiladons are looking - they just pure Lizardmen energy to me. Sturdy looking creatures, shrugging off wounds, carrying a BIG FOOKIN' SPACE LASER. Decimating enemies from afar, punching them with a massive tail. Love it!
The other 2 are my favorite combo. In the beginning I underestimate these two, but every time I field them they punching hard. 10-15 Guards with Starpriest right next to them, buffing them (even better if he's a general - take him with a Master of Star Rituals, basically lets him become Skink StarPRIEST) - they basically becoming immortal, unless there is a serious threat with high mortal wound output. And if you take SG with Eternity Warden boy oh boy.
But still I hope they will have some love in new battletome, they're still very vulnerable to MW, but they can easily take objective from everything and hold it - 3+ save with rerolling (thx StarPRIEST).
I once put 10 SG with SS on the obj, whilst playing against Slaanesh in Meeting Engagement and I hold it throughout the game. He's just loosing units around my 10 SG buffed by SS. In the end only 1 SG left alive with SS left with only 1 wound, but since then I get a huge respect for them.