Customise training sessions

I have recently gone and am still going through a bit of a metamorphosis in the way I deliver training sessions. Gone is the structured session following a lesson plan stating goals and objectives, in is a learner reactive approach.

It is much harder to achieve as a trainer but seriously more beneficial as a learner. How does it work?

I have loose structure to start with and a lot of useable examples from a range of levels and experience. The learner is interviewed prior to the session starting, sometimes on the day, with the aim of identifying skill gaps and potential time saving procedures. The sessions are far more interactive and job specific. It is limited to smaller groups and usually from the same company but it really works, even though it breaks a lot of the more established training conventions a better service is delivered.