I have been waiting for a decent multi coin wallet that utilises arbitrage to cut costs.
e.g. You want to buy BTC, the app notices that you could get this cheapest (including fees) if you buy dash through website x, trade it for eth on exchange y then trade for btc on exchange z.
You just have to have accounts on all those exchanges or do an api deal or something to make it work.
Too complicated, right?
It's not just complicated, but more likely impossible for a wallet to support arbitrage trading between some exchanges obviously.
Every exchange has the policy about how to deposit-withdraw and buy-sell coins, it's not possible for a someone without enough resource to deal with some exchanges to allow him to create a wallet and could access different exchanges at one time. There is no shortcut to do arbitrage trading, you have to do it manually.
However, I don't want to save bitcoin in a new wallet, even though it has some features such as import private keys, etc.
It's more convenient to have some bots on the telegram to notify me every change in the price and another bot as coins portfolio to check all my balance from several wallets by submitting the addresses (not private key or password).