Titan tier 9+
Totally 100% agree.
My favorite account spent 1.5 years fighting 5* titans. Which only gave me titan loot tier 5-7, which has a zero percent chance of 4* ascension items ( see below).
Currently in a 3 person alliance with wife and mom fighting 2* titans for titanium shield ingredients ( soon to be nerfed ) and Path of Valor.
So my family alliance has given up on the #1 source of 4* ascension items.
Both the Devs own support data base, and player tracking, show you must have titan loot tier 8+ ( high level titan
) for 4* ascension items.
Titan loot tier 9+ increases your chance of 4* ascension items by +50% over titan loot tier 8 since you get 3x ascension item rolls instead of 2x rolls.
Titan loot tier 1-7 has a zero percent chance of 4* ascension items.
The Devs never told us this, we had to figure it out from vague clues and tedious data collection.
Notes
(Titan Loot & You - A Data Farming Project! ***PRELIMINARY RESULTS***)
(Titan Loot Project - A Data Farming Project! Answering "What can/could I get from the Titan?")