Where has all the LOL intrigue gone?

I ask this question as a person who loves the world of Runterra but lately I feel like RIOT has stopped trying to deepen or expand their lore. The lore is the unifying factor of the game which lets people who really love it dive deep into the world and its mysteries. I know that RIOT has expanded Runterra a little bit with Shurima but that also came at the cost of Cassiopia's background. That whole tale, while visually appealing, felt lack luster. Cass originally had gotten her powers as a curse during her time as a double agent for Noxus. Now she gets bit by a stone snake which is SUPPOSED to kill her and instead grants her super powers. That doesn't make much sense to me and it also makes her less interesting. The champions that have been coming out for awhile now are unique but lack intrigue. Bards a fat cosmic Saint Nick, Rek'Sai is a sand shark, Ekko is a mohawk timelord. Cool designs but shallow otherwise. What happened to the global events, the champions that share history like Kha'zix and Rengar, Malzahar and Kassadin. What happened to all the mysterious that used to be written into lore like Zed's true background, the full extent of Leblanc's meddling, what happened to Noxus vs Demacia. Those were such cool ideas and endeared many of the hardcore fans we have today. The burning tides event seemed to be attempting this but ultimatley fell flat as the Lore just seems to end, furthermore the Lore built of preexisting lore and added only new insights to old stories. I may be greedy but I want new mystery, new intrigue to learn and theorize on. Here is a prime opportunity. Kassadins daughter. Some say it is Rek'Sai but that is a stretch. Make a champion about the shadow void monster that took her. It could have new mechanics, new lore that ties together old lore but maybe it has a nemesis. Is there an opposite to the void powers? It could have in-game interactions with Kassadin and Malzahar where they are tasked to hunt it down similar to Ashe and Lissandara. This is just an idea, probably not even a good one. But if you have made it this far into my writing I hope you see my point. THe world of Runterra is lacking true depth that makes its champions and characters seem real and living. Atleast lately i has felt this way. I love your game RIOT and I just want to see a little more interaction with the world and it's mysteries. Don't give everything away in the backgrounds, allude to events and let us piece them together. Have a good day.