As I clearly explained, I wasn't going in there solo. The title seem pretty clear on that point too. If you get a feeling of deja vu, I might not be the only one complaining.
We've been spending quite a few hours in Hard Modes, both before and after the nerf.
We have been relying on Bolster (which is a clearly viable option), as I have little gear, and my friend isn't capped. We had been able to play as DPS or Tank (which we find to be the most enjoyable roles), as our Companions used to be viable as Healer, Tank or DPS before the nerf. We never spoil the encounters by checking strats or videos, and it hasn't prevented us to clear most packs and bosses after wiping enough to learn the dance.
Now they can barely tank on some encounters, their DPS is too weak, and they straight up cannot Heal... forcing one of us into that role no matter what (which isn't fun for us). Their heals are abysmal and not even close to keeping us alive against auto-attack and unavoidable damage.
We can no longer get through many trash packs without sufficient control, which further make our Republic chars unplayable, they cannot heal either.
Our Empire chars are fun, but not being able to play the other two like we used to is just dumb, and one of us is now forced to heal, which ain't fun either.
I don't think we had an easier time than a full group, but some HM FP were doable before, no matter the role we wanted our comps to fill. I liked doing that more than most other endgame activities, and this isn't possible any longer for us.
If they want only full group to be able to complete these, more power to them. But I'll play something else.
They might want to step up HM Black Talon's difficulty as we managed to duo clear that one.
Peace