I am strongly against what the OP is proposing.

I want to start by saying that I am very much not happy with what hacker1001101001 did with regards to the plagiarism and what I believe he did in his apparent bump spamming of altcoin/ICO threads. Both are harmful to the forum, and these things happening on what is widely regarded as something close to the 'official' bitcoin discussion forum only discredits bitcoin, and the freedoms it provides. What he did also discredits the freedoms the forum seeks to give to its users.

hacker1001101001 was banned for plagiarism and was subsequently unbanned. I understand his ban came long after the offense. I also understand he was treated similarly to others who were in a similar situation. When hacker1001101001 was unbanned I view him as essentially being pardoned for his misdeeds. Considering the amount of time that has elapsed since he was unbanned, I would consider banning him for his previous misdeeds something very similar to enforcing an ex post facto law. Hacker1001101001's probable bump spamming should have been apparent to the admins when he was unbanned, and given the amount of time that has elapsed since I believe he did this, I don't think it would be appropriate to prosecute him for this.