So we have top, jg and adc Darkin. Can we expect a mid and supp in the future too?

Is it safe to assume all Darkins have similar color sheme (red and black) and share a lifesteal or spellvamp build in? Looking at Aatrox and Kayne they are. Accordking to Aatrox lore there are 5 Darkins, exactly what we need to have full Darkin team.

• Aatrox is currently placed after Eve for a rework, so maybe beside lifesteal he will have some spellvamp build in too?
• Varus. Since his pants or bow is a Darkin, he should match Aatrox and Kayn in colors: red and black. Update his lore and some skills. Give gim Heim/Zac/Kindred mini rework, so he will feel like a Darkin. Or he won't match with others since he defeated his Darkin and have full control? Then we would need one for adc role

For a supp I would imagine a champ who can bond with ally, like Kalista, and rater than healing himself through lifesteal and spellvamp he would heal his ally? More dmg focused like all Darkins but still with some mechanic that would help his allies to be considered a supp.