Hi Albert. I think most of the sessions are probably really great if you happen to find ones that align with your business needs, or if you use NetSuite in a more traditional way (which we don't really). Granted I'm only considering a small portion of sessions (ones that I think apply to my role) but I found that there weren't that many that were of use to me (in-depth customisation/scripting). The sessions I did find (like yours!) were great, but there weren't a heck of a lot that went to the level I needed or focused on the type of work I do. There were lots of good sessions I think for people getting started with customisations and for people more focused on the business side of things. At the company I work for we've been customising NS for over a decade so we are pretty deep into it at this point.
I understand it's going to be really hard to come up with a good span of topics that's going to be applicable to all attendees. Smaller groups worked better for us because of the specifics of what we are trying to achieve, but I imagine for many NS customers the types of sessions you have are probably a good range.