The most promising ecosystems before:
BTC and TON.
Both have the ability to issue assets in batches, but one is completely different in the way of issuing assets; the other is completely different in user acquisition and interaction.
TON actually represents a trend, which is to acquire users on a large scale and even generate real income, such as catizen, which has already made tens of millions of dollars in profit.
I expect that there will be better products and projects in this track, so wait patiently.
I am optimistic about TON, but more than half a year ago, I didn't see any interesting assets in the TON ecosystem.
The price of TON's native currency has always been very expensive, and it is heavily controlled, so I don't dare to buy it; some of TON's previous defis are not cheap and a bit boring.
A series of small games and applications other than finance represented by TON are more interesting new assets and gameplay.

