New Ranked Queue - READ BEFORE COMPLAINING PLEASE
Riot has stated already, in the initial preseason notes about it, that with the dynamic queue, there is only a 5% chance you will get matched up with unevenly queued teams.
For example, if you solo queue, you might be paired with another solo queue player, and a trio. The enemy team, 95% of the time, will be 2 solos and 1 trio. You could also be a duo and a trio vs a duo and a trio.
The ONLY issue I see with this is pairing solo queue players with more than a duo-queue. Trio is eh, but doing a 4+1 vs 4+1 is honestly not the best idea, as explained by DotA removing this as an option in their ranked party queue.
//Edit: Adding math from one of my comments. This is regarding the 5% chance to have uneven matches in terms of party size stated on the initial web page about the dynamic queue.
Let's say you play 10 ranked games per day. Out of those, 5% will be imbalanced in terms of queue size. This is 0.5 games per day, or 1 game every other day. That game could be in yours or the enemy's favor. So, since, statistically, it will be 50/50 your favor/enemy's favor, that means that every 4 days you will have an unbalanced game in the enemy's favor.
TL;DR That feel is real.