Oh man, I couldn't follow you down that path. The last game gave me motion sickness, and I don't get motion sickness easily. That camera was a nightmare for me.
Doom 2016 was already really fast paced, Doom Eternal is somehow even more so, by a significant amount. If the last game gave you motion sickness don't come anywhere near Doom Eternal.
It's a great sequel, better than simply giving us more of the same, but I definitely like 2016 more. The gameplay system in Doom Eternal is more varied, but it doesn't feel as tightly designed. There are more mechanics to worry about than before, and coupled with the crazy fast new gameplay speed, it feels a little too frantic and scattered. Still, I prefer that the developers experimented with these changes as opposed to playing it safe and sticking too closely to the formula of the old game. Not as good as 2016 imo, but still a must play if you liked 2016.