From all you have posted on this forum so far it looks like you and your hubby have been talking about finding a woman to be in a triad relationship with for quite some time. Even tried it out with one lady, and it did not work out, but you are still friends with her. From your blog thread I understood that you have come out as poly to your families, and dealt with the consequences.
All in all: a lot of work done, a lot of discussions behind you already. But, all of them about getting into a triad with another woman.
Now you have realized that you would like to start dating separately, and see if that would work any better. Probably your wish to be with another man is a new one, too. (You have not mentioned that earlier in your posts.)
Did I get it right? Please correct me if it went wrong somewhere.
My advice in this situation:
Your suggestion to start dating separately can be a difficult one for your hubby to digest. It can be very hard for him to wrap his head around you wanting another man. And for himself to date women on his own.
In a way it will be a totally different situation. You will need to negotiate everything all over again, from this new point of view.
I think it is good that you have noticed this change in yourself. We all change all the time. Now you want to start dating separately - and that is ok. You just have to find a constructive way to express your wish to your husband - and let him express all the emotions that might arise in him due to this change.
You and your hubby seem to have open lines of communication. Keep that up and this change might be for the good for you both!