While I do somewhat agree with you that things need to be limited, I personally don't think that's the way to go about it;
1. The TPS drops that are caused by generating new chunks are completely different then what we are dealing with. One the chunks have been made, they cause no lag (they're just saved).
2. Refer to 1.
3. I'm not sure where I personally stand here, so I'll leave it at that.
4. Mystcraft worlds can be made by leadpistol, and that's it, this is not an issue.
5. Again, not sure if this even applies to anyone, so I'll leave it at that.
6. Tbh, there is no way in hell to limit this, there are just too many ways to create ticks, and as far as opis says, this isn't a huge issue.
That is just my opinion however, take it with a grain of salt.