How do you do your progression runs?

For base training, I like your approach especially going by feel and nothing too intense.

If progressions were your main workouts in season, then I'd recommend a faster pace toward the end, then finishing with a cooldown mile.

I have a 10k loop north of home, and a 5k loop going south. A favorite workout is to start with the 10k easy and finish with the 5k hard (tempo).

Other times I'll run the first half very easy, then throw in surges during the second half, starting with very lite strides and gradually ramping up the intensity to hard strides (sprints).

This is a pretty good resource: https://www.mcmillanrunning.com/start-slow-finish-fast-how-three-types-of-progression-runs-boost-your-fitness/

I like to incorporate it with the long run. Helps mentally to get through it and makes spacing workouts out easier.

You could even work down to your threshold pace for the last few miles and call it a workout for the week.

Workout #1 - Progression Long Run working down to Tempo

2-3 easier days

Workout #2

2-3 easier days

Repeat...

I like to finish at race pace for the last mile. So if I'm doing a 6 mile progression, if I can finish near or ideally at 10k race pace for that last mile it's a decent workout. I start out very controlled but still a lot faster than 'easy run' pace.

6 mile example: 5:40, 5:30, 5:20, 5:10 5:00, 4:50.

I walk the first mile, then jog a few miles, then run twenty miles and then sprint until I collapse.

I've done a workout like this (much slower) but the same concept:

8:30, 8:20, 8:10, 7:50, 7:40, 7:30 (10k? pace).

The 8:30 first mile is nice, as it safely warms your legs up.