It's just a personal opinion from mine :
1. I think writing's risk level should be Medium, because these days i see few scam signature campaign and you might be scammed if you worked for people who don't have high trust.
2. I think writing's risk level should be Medium, because when a project dead or a project become scam, i think it'll affect your name and you could waste lots of time and money.
3. I think you should separate investing and trading because i think both of them have different level of reliability and profit level. Many investment which offer good profit are scam and the real one offer low/very low profit. Meanwhile trading profit & reliability is depends on which altcoin you're trade now, most altcoin can bring profit in a night, but most of them aren't reliable because most altcoin will die shortly or never rise again.
Anyway, this thread is helpful and sometimes i use this as reference

I disagree, there may be scam campaigns but the worse you lose is your time.
With other scams you lose real money so thats way worse. Plus there is already a thread that ranks bitcoin sig campaigns.