400m S-L questions

Q1. why is it reduced to 2 hi intensity days? could speed work not continue on the wed or even some speed endurance .i.e 120,150.

Q2. instead of power speed & strength endurance on sat could a 5-6x200m 2min rec at target come home pace be done instead, followed by a rest day (sun) for the first 7 weeks then return to extensive tempo week 8-12.

Q3. what exactly is the strength end?, running A drill for 60-100m?

Q4. what would the competition period look like? maybe 2 hi intensity days, day 1 -some blocks 30-50m, race modeling 200+200 , day 2 - race or special endurance(200-300)