This means you now have legacy items
Uniques in POE are supposed to be UNIQUE, not better, fluffed up and fancy rares. Some are just fluffed up rares, yes, and others are simply leveling items, but the majority have UNIQUE modifiers on them that cannot be gained anywhere else in the game, and as such can be build enabling. What you're thinking of is something along the lines of Legendaries from other games, which are the super GG items that have no better equivalent and are very rare.
For future reference, any characters in temporary leagues will be returned to their parent leagues, regardless of whether or not the game-play mechanics are being transferred to the core game. However, any League Specific items that you have in your stash/characters will also be transferred to standard, once again regardless of if the mechanics are going to the core game. This means you now have LEGACY items.

Jan
Best PoE 3.13 Ritual Mauarder Starter Builds
Many of the builds in this PoE 3.13 Ritual Mauarder Builds guide are good for starter that are popular with many players. For the three ascendancy classes of Berserker, Chieftain and Juggernaut, the focus of each build is also different. Hope it helps you.

Aug
poe4orbs:[Lake Of Kalandra] PoE 3.19 Witch Starter Builds
Here is the latest PoE 3.19 Witch League Starter | Fast | Endgame | Cheap Builds brought to you by PoECurrencyBuy.

Jan
People saying that there is no P2W in Path of Exile are correct
no Poe hardcore player so if i did anything wrong dont bust my head for it. all i ever learned about the game in that few play was chromatic orb, didnt learn anything about regret.

Dec
All that the jewel sockets and Clayshapers are a pretty big investment
getting jewels will be hard, and without them you cant really play arround Golems, unless you go normal summoner first then switch.