Only rank 14, but...
What you liked:
tier 5/6 could participate, without this I would not be able to start
rewards for every ranks
best game experience in the game, balanced but not too big teams
that I have a chance to get the Jolly Roger
the irrevokable ranks
What you disliked:
It's too easy to lose a star
It was overlapped with the ARP mission which took my gameplay time
people who don't play the role of their ship class (for example: cruisers didn't hunt spotted DDs, killed a BB instead and got killed and the enemy dds had no problem capping us out)
there were very few CVs, most matches I played were without CVs
Suggestions for the next season:
calculating the stars based on XP OR the first losing match just don't give a star, and only from the second lose will take one, and winning always give one
AFK, teamkill and bot should be highly punished
MM should create always balance classes (not too much from any class)
missions could be completed in Ranked too, not just in Random
Divining leagues and tiers more (third leauge-rank V, Second league-rank VI, etc...)