5* with emblems
Gryphonkit, my wife, is very competitive. Since emblems were added, the number 1 reason she swears at her phone is raiding in Platinum/ Diamond.
You could trophy drop to Platinum, then open your chests in Diamond.
4* ascension items
Because Platinum/ Diamond take a lot of hours, one of my accounts has been in Gold for at least 1.5 years
By comparing some of the family accounts, I discovered yesterday that Platinum/ Diamond arenas are significantly more important for 4* ascension items than I thought
Food and iron
With Stronghold 21 I have been paying more attention to Food/ Iron.
Food/ Iron from raids and Wanted Hero Mission Chest is significantly higher in Platinum/ Diamond.
Titans are king, but Diamond is a gamers best friend
Titans are still the best way to get 4* ascension items.
But Platinum/ Diamond gives more 4* ascension items per year than rare quests and appear to generate more food / iron than a Watchtower level 20, with 21 outposts, that is never raided.
Notes
Emblems and soft cap
Some of this post is outdated ( example physical/ slash attacks are tinted like special skill attacks not colored like tile/ matching )
Loot chances
@zephyr1
@Garanwyn
I wonder if this is a typo and should be Platinum/ Diamond: