I think with the Kharadron Overlords you can make some sick kitbashes with the leagues of votann, i honestly think it even fits better into 40k than the modern sci fi look
Frigate Compatible Custom Flight Stand Kit – Magnet Baron LLC
Start Competing: Kharadron Overlords | Goonhammer
Ironclad Compatible Custom Magnetic Flight Stand Kit – Magnet Baron LLC
This is How to Magnetize The New GW Flying Stand Stems
Up, Up, and Away!" - Skyriggers - Part I
Magnetized+Customizable Endrinriggers/Skywardens and Gunhauler : r/KharadronOverlords
This is How to Magnetize The New GW Flying Stand Stems
Magnetized Skull Cannon or Herald of Khorne for Warhammer 40k or AOS - YouTube
Review of Kharadron Overlords Start Collecting Box
OLD] How should you build Grundstok Thunderers for your Kharadron Overlords army? - YouTube
I think with the Kharadron Overlords you can make some sick kitbashes with the leagues of votann, i honestly think it even fits better into 40k than the modern sci fi look