Oh, my bad. Allow me to rephrase it. That would nerf a bunch of other shoeboxed runes like ravenwraith and the useless demon voil thing that has sucked for all eternity always. Stop trying to nerf FW so hard.
No, Ravenwraith is one of the few champions with Souldrinker, so it would, like Sac Dagger, remain unaffected by consolidating to the weaker ability. The same goes for Cavernspawn, the "useless demon voil thing." Neither of them would be hurt by any change to Lifedrinker. If you want a list of champions with Lifedrinker, here you go: http://s-qpoxdb.rhcloud.com/ability/98 -- of which precisely zero have it as a base ability. So, basically, Skeletal Reaper and Cavernspawn get a cheaper upgrade, Ravenwraith gets 3 nora cheaper and gets a slightly better ability, and Sac Dagger gets a minor buff, or a few champions get more expensive upgrades. That's the range of effects of consolidating Souldrinker and Lifedrinker.
Oh, that seems fine then. But don't push more of that summons should contest fonts because m-muh elegance and consistency nonsense. You have me on alert whenever you bring that stuff up.
I do see that Reconstruct is pretty much untakable. Maybe it should be a choice between Zombie Herder and other things instead? Then Coven would actually be possible since you can use her in a Witch build.
I've wondered about that myself but I think witches would always have better options in a full theme while it would limit the variety of upgrades she could take in a zombie bg. I could maybe see that working if she had better options on U2 or even just Consume on base so that TL was more of a viable choice. That way she could take Zombie Herder as an upgrade on U1 without being stuck moping around poking stuff for barely any damage while her cooldowns are up.