No. You are very wrong on your first point in your reply. It would without a doubt lengthen queues . It is so obvious that if you split the available pool into two groups there are less in both groups. That leads to longer queues regardless of how one looks at it as long as they are not blindfolded.
It is a mathematical certainty.
As for your second point in your reply, Obviously separate queues would not hinder people forming groups. However, it does lengthen the queue times. In an MMORPG group activity your suggestion makes zero sense that it should have a priority. Again, MMORPG group activity. There are no solo BGs.
The middle point is not worth replying to since it is merely an attempt to minimize and belittle my participation in this thread merely because you disagree with me.
As for your claim about better PvP elsewhere, While that is merely an opinion based on your preference, I would hope there is some better PvP in games that are PvP based. ESO is clearly based on PvE and it's history in TES is obviously PvE based.
Some premades are bad, some pug teams are insane. Just because you got rekt and the other team was sticking together doesn't mean they were a premade. I've been on pug teams that were really good and rekt everyone.