It will be a good thing and I think the first one will open in Japan with out a doubt. But it would be hard for them to open more stores around the world.
But I think that Bitcoin can accomplish this but they not have to hurry, everything comes with time. 

I don't think there is anything in the world of crypto which is better than Bitcoin. So I seriuosly doubt that any other crypto will be used more than Bitcoin.

back @topic: Bitcoin will be used a lot in all kinds of stores in the near future. In fact those stores who'll adopt Bitcoin first will be in big profit.

I hope not. The day I will be able to pay taxes with Bitcoin, I will switch to another crypto-currency. I don't want my shitty government to get in my money. If I can taxes with it, it means that they have a way to know how much I'm hiding and I don't like that idea.

yeah bitcoin delivery services from a third person looks like it will sound unfamiliar. people prefer to buy on the exchange and send yourself anyway you are not charged for sending bitcoin. maybe just a small fee so that was not a problem.
I think this will require considerable time

Yes in the near future you will see stores  accepts bitcoin now just like visa or credit card and a btc card can be use with it.

Western Union is not global currency it's like a Bitcoin wallet for your fiat you give them cash they send it to your friend in another country charging you higher fees in the process. We have enough Bitcoin exchanges at the moment all we need is more businesses to start accepting Bitcoin as a legitimate payment method so we don't have to jump through hoops to spend our coins there because they favor only fiat processors. If we can purchase things directly with Bitcoins all the exchanges and payment processors will lower their fees because we won't be needing them any more to convert to fiat because we will be spending Bitcoin and no 3rd party will rip us off with more fees like in the fiat world.

Yeah I already thought of this and there's a high possibility that this might happen. Well with the popularity of bitcoin now unlike before, I'll be just waiting for a few months or maybe a year for this to happen. But whatever we can't definitely predict the future so it might or it might not happen.

i was wondering is it allowed to advertise bitcoin logo on the streets advertise them on the busses  is it allowed

If the policies in your country allows you to do it, then you can give it a try. But I think it is pretty time consuming getting all required documents and licenses. Here there are some store-in-stores where an WU point there allows you to send or collect money. You can do the same with Bitcoin.