Maybe the system you mentioned is the same as what is available in my country's banking system, usually called term deposits or time deposit, where customers can save their money and choose how long they will keep it and will get interest, but it is clear that the interest on all banking products is small, even it's can be said not worth it at all unless you save it in a very large amount, but a large amount will certainly provide more benefits when invested than just being kept in the bank with a small interest rate.
In my opinion, virtual banks are much less safe than conventional banks, and maybe that can be done, but the government will definitely implement strict regulations to protect customers, but to be honest, I don't really trust virtual banks and only use them as a means of transaction, not saving because this is just as dangerous by saving our coins in CEX.