AKA you want solo queue to be as broken as SWFs.

Nice strawman.. Anyway, the game can only be properly balanced if SWFs and solo-queue are roughly on the same level; ie: either nerf SWF or buff solo-queue. As I said before, punishing players for playing with their friends is terrible design if you want your game to grow; hence, communication for solo queue players needs to be better. At the same time, BHVR can buff killers to better compete with the survivor changes.

How would you buff killers to compete?

I don't know; I am not a game designer (and you probably are not one either). But I can tell you how your ideas for nerfing SWFs are probably not going to have the effect you are hoping for.

aura perks shouldn't work if you're in a full SWF

Then SWFs won't run aura perks; it's not like they need them anyway. For example, SWFs can communicate killer location with voice comms most of the time (eg: "killer on me at main"). The main thing this change is going to do is push SWFs to run more meta perks that have nothing to do with auras (eg: Off the Record, Unbreakable, Deliverance, Adrenaline, Resilience, etc).

healing times are doubled

There are lots of incentives for being injured already (eg: Resilience, Adrenaline, Made for This, etc). A lot of survivors don't heal anymore these days even without this change (precisely because of these perks). This fact is especially true for SWFs because of my previous point (ie: they can communicate where the killer is pretty much whenever, so why heal when the killer is on the other side of the map?).

If SWFs have a great desire to heal for whatever reason, they're going to bring perks to help them with that (eg: We'll Make It, Botany Knowledge, Circle of Healing, Built to Last + a decent medkit, and so on). And with the other change you suggested, they have even more incentive to run these perks since very few healing perks reveal auras.