I'm no sure it applies to fan fiction exactly...so until there's some sort of clarification, I wouldn't scrap anything just yet.
Most of the proposed rules are somewhat reasonable. Even the funrasing cap, I get which quite frankly is a direct nod to Axanar. The biggest issue is the length constraint. Granted, there is something to be said for certain restraints fueling creativity, (which is what Doug Drexler was saying on facebook yesterday) but it cuts the feet out from under ever fan production currently running and comes from a place that makes the rules seem styfling.
Personally, I think these rules/guidelines, have been laid out because CBS/Paramount is scared. They saw someone do it better, cheaper, and with far more support than anything they're producing. Say what you will about copyrights and the people involved with Axanar, I don't know anyone that hasn't seen "The Preulde to Axanar" proof of concept film and been blown away by it.
All of that being said, I understand the position of CBS/Paramount. They are the copyright holder and if they feel that fan productions are stealing revenue they could be earning or that fan producitons are using their products illeagally, they have the right to say knock it off. As a creator, i get that. I wouldn't want someone making money off my stuff or using it without my permission.
The thing is, they're going about this the wrong way. They're not only upsetting fans, they're going to lose business. As silly as it may be, there are people that will boycott Beyond and maybe even the new series because of this. They could have handled it better, given a bit more breathing room, or actually given support and acknowledgment to the fan productions. You don't have to treat your fanbase with kindness, but you don't have to actively alienate them either. They could have done better and worked with the fan productions instead of working against them.
One point to this guideline:
"The fan production must be family friendly and suitable for public presentation. Videos must not include profanity, nudity, obscenity, pornography, depictions of drugs, alcohol, tobacco, or any harmful or illegal activity, or any material that is offensive, fraudulent, defamatory, libelous, disparaging, sexually explicit, threatening, hateful, or any other inappropriate content. The content of the fan production cannot violate any individual’s right of privacy."
Parts of that are vague to say nothing of the the conditions that have been violated by the canon movies and episodes already. And who gets to decide what inappropriate is? Paramount lawyers? I'm sure they'll air on the side of artistic merit.
This whole thing is a mess.