The display name for your Snapchat account could be a good way of keeping your username hidden on your profile or so, but to create a completely new account to change the username could bring a lot of drawbacks along with it. The very first one being that you will lose all the streaks that you have ever had. Anything that is attached to your old Snapchat account cannot be linked to your new account. This means, if you choose to make a new Snapchat account with a new username of your choice, all the data attached to the old account will go with it. You will lose the pictures, the videos, your streaks as already mentioned and the trophies which you had earned over the period of time on Snapchat. And most importantly, you will lose all your friends on Snapchat. Not that you cannot add the back on the new account, but that again would be a hassle to find all the friends and then add them, and then wait for their approvals and so on. This will be the most time-consuming part of making an entirely new account on Snapchat just because you want to use another username. My suggestion? If the username is not giving you a hard time, just change your display name instead and use the same account. It takes a lot of hard work and snap-ing, of course, to make those streaks and earn those trophies. So if it is not a PROBLEM to remain on the same username, keep this account safe. But, in situations like where you want to go on social media with a new identity because of whatever reasons, then go for it.
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