As I said above, tier 3 strives on its massive imbalance that allows for easy farm by those on top of the tier of those at the bottom. Those farming on top of the tier are not learning, but those genuinely entering the tier sure are.
It’s only in T4+ that players finally have all the tools (slots + modules) available to them.
T4 usually is easier to win as a team, smaller games, easier to carry, and random solo players are often either really terrible or really good. Any player entering T4 will automatically see a DSR change up or down, depending on his knowledge of teamplay / how to play objectives and gamemodes / skill / team setup etc. and keeping DSR high with T3 only is a challenge.
It is true, that T4 might already form it’s own endgame, and I encourage that, and yes, T3 is an entry-tier, but …
T3 has variety of ships, has DLC ships, has a metaplay surrounding an empire ubertank (or 2), and it is not “unbalanced” it is “different”.
T3 automatically divides into Q<=33 (R8) and Q35 (R9), and R9 games are often very very close.
Simply because there are enough DLC/golden ships in the lineups to make that “gap” in the shiptree nonexistant usually, and many people buy their golden ships in T3 gradually, even if they already have T5 ships. Since even those who buy many ships, are not neccessarily rich people, but definitely hardcore players, and T3 ships have still affordable prices, it can’t be seen the same way as T4&T5, but T4 could suffer the same fate in the future, if, just imagine, a DLC T4 came out.
A full golden setup does not take you to Q35, except in a squad, and at least somebody has to have a natural R9 equipped, which keeps soloing beginner-creditfarmers mostly out.
I agree with what you basicly want to say, I just think, there is bias.

What if the cue for a suqad was 30 mins to get a match in t2 and 40 mins in t1… I’m sure u would tier up then lol