1. You're taking a super niche case and saying the entire mechanic is a bad idea because of that one case. Think of all the fun you could have trying to pick a word for who to kill.. observing their vocabulary.. how they type.. man it'd be so dank. There will ALWAYS be town alive and town needs to talk to win. And town players would have to adjust their vocabulary because they'd be scared of trigger words... "Last Wills please" instead of "lw". It would bring an entirely new dynamic to the game that hasn't been done before.
2. Ventriloquist would be dank. You could hijack anyone really, claim sheriff, give a false lead, and destroy their cred. It would give evils a new way to lie and say "Ventriloquist got me" when they frame someone, get a lynch, and then try to avoid their lynch. Saying it'd be used for griefing is kinda silly, if someone wanted to grief they could just grief and leave the game.. do you think griefers care about winning?
3. You can get so much out of reading someone's LW. You ever hear of an anti-lead? If you check 5 people and they're all NS, and there are 7 people alive, you know who the evil is. You could also compare LWs without anyone knowing and be able to tell Gov (if they were to reveal) that two LWs conflict.
4. Hacker is supposed to get stronger the longer the game goes. Like day 4/5 when people are posting their LWs public, you can rewrite it exactly as they wrote it but all the shit is wrong. Or a lead that was supposed to be there that would have caught your BMer somehow gets erased... it's just another mechanic that could be added to the game that hasn't been done before. I guess it wouldn't work on you, but that doesn't mean it wouldn't be a fun mechanic.
It really seems like you just shoot holes in my ideas solely to do just that. If you guys don't like the ideas, fine, but Frinckles said he wanted to add two new roles and one of them sounds like an AoE Escort? We need new mechanics, not the same mechanics rearranged. So I'm throwing NEW ideas out there.