This section (IMO) should vary some depending on where you are in your current competitive season. In the off season with someone wanting to make some swing changes they could/should spend more than 30 minutes on technical block practice. Let's say 15 minutes were with irons and 15 minutes were with driver/woods. If you are practicing properly that's only ~30 ish swings with irons and ~30 ish with driver where you are working on technical things. (That's on the high side too, probably even less if you are filming every swing and reviewing the swings during the session)
Now if you were in more of an in season maintenance mode with your swing then sure it might make sense to have more of the full swing time focused on the skills assessment portion, but if you wanted to make serious improvements in your swing mechanics IMO you should be spending more than 30 minutes out of a 4 hour practice session on full swing mechanics.