Your only option is the Blight Drone from forge world or a flying Greater Daemon/Prince, neither of which are exceptionally good or reliable.
Basically, in an MSU list. I could ally in CSM for a Hellblade, or something, but then I'd be bringing in a cultist/sorc tax for the cheapest possible minimum detachment who wouldn't really add anything--essentially doubling the cost of the Hellblade. And a Daemon Prince would cost more than that doubled cost...
I mean, I could get an ADL, but a) a single lascannon or quadgun aren't thaaat spectacular at taking out flyers and b) if I were taking an ADL, I'd rather grab a comms relay, honestly... I just dread running up against 3 Flyrants, since those fools would be wiping out a unit each per turn, basically.
I haven't been totally clear on how Scoutshame and Lictorspam, work as lists. But both do appear to have a hard-hitting element.
I'll be honest--I don't really get
Scoutshame, either. Hence why so many people have been shamed by it, I think. I mean, I get some of the working elements, all of which appear to be pretty solid--maxing out IF chapter tactics with a lot of cheap bolters and Devastators for Tank Hunter buffs; Lysander and some psykers in a Centurionstar; DSing BA command squad with melta; thunderfire cannon...
But scouts are so damn fragile. I feel like looking at this list illuminates the gap between a good list-builder and an excellent
list-player, since it got to 2nd place. I don't think I'm missing any hidden insanely powerful synergies, am I?
Lictorspam is more comforting in how alien and unfamiliar it is--it's not using elements I'm used to seeing, used in some original manner.