Rebranding is the creation of a new look and feel for an established product or company. The usual goal of rebranding is to influence a customer's perception about a product or service or the company overall by revitalizing the brand and making it seem more modern and relevant to the customer's needs.
First thing first you have to put a source/credits/links of what you are saying that is completely copied from other sites and not from your own words,
Source:
https://whatis.techtarget.com/definition/rebranding
Bitcoin is not a company, that you mentioned for several times for rebrand. And what you have said for the rebranding are totally nonsense, if you're talking about its bad rep from the silk road, scamming, hacking. It's like you're saying every money (local currencies) and some online money like paypal have to rebrand too? All kind of currencies are used in any sort of illegal doings.
Regarding to its picture of Casascius bitcoin of course its only a model of a so-called physical bitcoin since bitcoin doesn't have any physical characteristics at all, a
BTC sign is enough.
Most people see the name and associate it with some physical coin. The media is also not helping with this
If you're also one of them thinking that bitcoin is a physical coin then all I can say is there's no cure of foolishness.
If there's something to be rebrand its BCH IMO.