After the recent banwave where I unfortionally got banned.
Would it be wiser to make a completely new b.net account or just buy the game and add it on the current b.net account?
Depends on if you wish to bot again on that same bnet or not.
Basically you should know that bnet account is being watched now so any signs of boting will be met with a ban. You can still use it just dont bot on it.