If I'm not mistaken, then everything will be as follows. Inside the wallet it will be possible to change only the TOP-100 digital coins. In a separate exchanger, you can change money for those coins that are not part of this TOP-100.
I have never seen an exchanger where 50+ different currencies can be exchanged. It will be very cool if there is a reliable exchanger with a large number of currencies, including cryptocurrency.
The main thing that the exchange rate was adequate. Then it will be interesting for users