Dynamic queue has failed. Sorry.
I'm not meaning this to be a rage post, if it sounds like it is, I'm sorry. But on to my point.
Having primary and secondary has to mean there is more emphasis on the primary. There has to be. But currently, there is no way there is, and here's why.
In a system of primary and secondary, your queue needs to go a little while to search for your primary. Only your primary. Then after it hits a certain amount of time(either set by Riot or manually set by each player, I'm in favor of each player) queue resets, expanding the parameters. Your new parameter would be Primary OR secondary, where as before it was just primary.
But currently, when multiple times in a row this happens, your queue can pop immediately. And it can just as easily be your secondary. Wrong. This is what shows the new champ select has failed. In primary/secondary, immediate queue pops can ONLY mean primary. Where as if you've had to wait a while, then it can be secondary or primary(and by while, I'm not meaning 10 minutes. This can just as easily be 10-30 seconds).
Put this into other terms. I'm sure you've all played CoD before. When you select your primary weapon and your secondary weapon, you're placing more emphasis on your primary. You spawn with your primary.
The current system of primary and secondary has failed. Sorry.
Edit:
Thought I'd add this in(this my be the ragey part, however). The way the system currently works, players are more likely to be trolly, I think. I can testify this from personal experience. I NEVER troll and I always try my best, but when I'm put into another role(my primary is jungle, always) I'm more likely to pick "op" picks regardless of me ever having played the champion before. (I've played them all before, but a lot of them only like once in aram or something). I'm also likely to pick "counters" rather than comfort picks, simply because I don't really have any comfort picks in lane. And those that I do just aren't as comfortable as they should be.