New way of scoring PVE to remove speed and timing dependence

Ptahhotep

There has been a lot of discussion on the forums about the need for speed and timing when aiming for placement in PVE. I am going to suggest an alternative.
Instead of making placement dependent on maximising points through speed and timing points will be earned through achievements.
Full points will be available for each clear of a node. Five clears of each node (except the 5* essential) will suffice for progression as before. Whether or not a sixth clear should remain available is debatable.
Achievements will be used to gain additional points. These will consist of both fixed and variable score achievements and will be available on both individual nodes and across an entire sub. Some examples will best illustrate what I have in mind.

Node level:
Fixed point achievements:
Achieve 30 ap in any colour
Win a battle using a team comprised of characters of a specific affiliation
Make a match 4
Make a match 5
Variable point achievements:
10% of the most damage done to a single enemy without downing them
Most ap expended/gained in one turn

Sub level:
Fixed:
Achieve 30 ap in each colour
Use a team of each affiliation
Use each of the current boosted characters
(the above would score for each element of the achievement, so you would get points for 30 ap in five colours, but not the full points.)
Win a battle without firing a power
Variable:
Most special tiles on the board at any time
10% of most damage inflicted in a single turn (including excess after downing)

Fixed achievements would be only achievable once (green tick). Variable ones would be open to improvement.
The other advantage of this would be to encourage wider use of rosters as teams would need to be tailored to completing particular achievements.