For the compiler I can't call the "impl period" 2017 successful at all.
Do you remember what happened due to the pre-impl-period RFC deadline? I remember.
Last month(s) before the impl period:
- Compiler contributors - work less than usual due to constant distraction by the flood of pre-deadline RFCs.
- Compiler non-contributors - write RFCs as if it's the last day of their life.
The impl period itself:
- Compiler contributors - work as usual.
- Compiler non-contributors - relax on the pile of RFCs.