The logic to fix ToriEconomy is simple.

Nowdays: easy tc = worthless

The easiest way to fix is control how easy people can get the tcs. Now its basically free tc with daily rewards and free items.

Solution: Make the ways to get tc harder and make it worthy. Events like ETourney make a unique coin that the only way to get is winning this kinda of event and with this coin you can buy unique items, remove shiai token and make a new one. Thats make people get better and more enthusiastic to get a really cool item.

Stop giving cool items for free, free items = worthless
Example: Icon 2 or 3 years ago was 100k and nowdays is like 50k (-50% less) and this apply with most of battle pass items.

Thats my opinion, maybe isnt 100% right but its a good idea