Do you agree that usability of Bitcoin and other cryptocurrencies in real monetary world is quite complicated
no there is nothing complicated about using bitcoin. it may be complicated for many of the altcoins since they don't have decent wallets, no services such as Coinbase for example, ...
but for bitcoin it is all easy and they want it is user friendly too. if you get to technical (which is not at all required for end users) then it becomes complicated.
and is associated with high transaction costs?
no, the transaction fees of bitcoin are low. you can transfer $10,000,000 in the safest way possible in an instant and only pay $4 (worse case scenario) or pay $0.05 in most cases.
I mean if you have Bitcoins or Ethereum in order to cash out with fiat currencies you have to go through complicated procedures and in some countries it is not allowed in general (if you receive money to your IBAN from some kind of unregulated Bitcoin exchange, the money will be frozen).
for ethereum yes, because it is not a currency. it is a token that you have invested in and you will have to sell it to get fiat in order to do anything with it.
but with bitcoin it is a currency, you can use it as such if the other party accepts it. so there is no need for any complications here either. you just point, click and pay.
I believe that community lacks some kind of important infrastructure element (like a bank) which would provide full set of traditional products and services to cryptocurrency holders - the institution that would serve the needs of the community and would reduce complexities and transaction costs. What do you think about this? If such element would exist, what else functions do you think it should do and how else it could help the cryptocurrency community?
something like that will have additional costs (fees) not less fees.
it is not possible to trust a third party like that.
and also we are using bitcoin because we want the option of not needing any third parties which means such businesses won't be so popular.
Our team is working on interesting project and your ideas would be highly appreciated and might be taken into account.
Thank you for your ideas and willingness to share your opinion.
well, services like Coinbase do exist and people use them. but they are only newcomers or those who want to purchase or trade bitcoin and a couple of altcoins that they offer. not someone who wants to use bitcoin.