J8 I was also thinking of having this as a painting show and tell, as well as discussing how best I could use it tactically. That's why I wasn't sure on where to put it.
Basically I see all my units hang out in pairs so
Scorpions and rangers infiltrate into terrain on a flank.
The Dragons + Autarch and Storm Guardians then add their attacks to this flank in their Waveserpents.
Whilst the Guardian Defenders + Farseer and the Wraithlord just cause agro from afar.
Opponent wise its pretty mixed group here mostly being space marines at a guess. That's why I choose the scatter laser as it's better to force lots of saves on them