Bitcoin can make transactions faster and easier and also low cost of remittance in poor countries, if been ligalise.
Please be informed that Bitcoin fee is dependent on the network congestion. Since Bitcoin confirmation queue is not first come first serve basis, but rather a competition of who will pay more, I am somehow hesitant to say that Bitcoin transaction or remitance is low cost especially when it will go through a centralized services since on top of the Bitcoin transaction fee, there is also this service fee. With that in mind, I do not think that Bitcoin remittances will be a low cost one.
Aside from that, Bitcoin transaction is instant but confirmation takes 10 minutes in average, so centralized services is much faster when sending a transaction within the same application, and local bank transfers is also almost instant. The only thing where Bitcoin shine is the international transaction but I believe there are also some services that offers instant transactions in global transfers.
Bitcoin can be accessible and use through mobile devices in countries with inadequate infrastructures, for payment if been ligalise.
Same goes with financing applications. The best thing with Bitcoin is that we can transfer our funds without asking the third party approval if we do a blockchain transfer.
Could you also believe that bitcoin related projects can make poor countries develop their internet infrastructures, improving connectivity and access to informations, if been ligalise.
I have not seen such a thing in my country, because Bitcoin-related projects often falls under financial services, while internet connections falls under technology and communication.
There is no doubt that Bitcoin technology offers a variety of opportunities to everyone, the main concern would be the leaders of the government since they are the one who gives a go signal on which regulations and projects to implement.