I think there would be changes like some a store in your local store accept Bitcoin as one of their payment method when buying on their store and also you won't need to hide about owning BTC. I am sure you know that some people are being secretive when they bought bitcoin because it is banned in their country so if it becomes a legal tender then that won't be a problem anymore. The final decision will depends on the government if they made BTC a legal tender or not.
"Legal Tender" is not the same as "legal".
Also, "Legal Tender" is not the same as "legal".
In fact, "Legal Tender" is not the same as "legal".
Please stop asking for "legal tender" when you clearly don't know what that means.
Bitcoin is
legal in almost every country in the world. You can buy, hold, and sell Bitcoin almost anywhere legally, even in China, where only the big banks are forbidden from using Bitcoin as one of their assets, but otherwise individuals are free to use Bitcoin.
Asking a government to solve a problem when there isn't one is
dangerous...