Marcus,
I thought it was a fun track, but I think it was definitely skewed towards the later cars. ABS and traction control definitely helped at this event. I heard from a few people with ABS that their ABS was chattering as it tried to keep up in a few of the braking zones. You don't see too many pre 1990 cars in the top 10.
I found the track was easy to follow, but I know it seemed to throw quite a few others off. Drivers really need to practice looking further ahead and adjust for conditions. I think my third lap in the first session was a 1:22.71 (if accurate) which is very close to what I ended up with in timed runs.
Everyone has to drive the same track. If it's safe and doesn't require you to shift into 1st gear or allow you to go over 80, then it's ok. Some tracks flow well, some don't and some require more skill than others to post a decent time. I like the tracks that allow for different lines. I've never liked narrow, completely coned tracks. Wider tracks or open layouts allow drivers to make choices. We used to have a rhythm section in the old PDS track that I loved. Most of the students would just follow the cones around each "corner". The instructors would just throttle steer through it with very little input from the steering wheel. It was great to see the students "get it" and start to do the same.
Keep mixing it up and remember which segments people liked and which ones they didn't. You can't please everyone so just listen to the opinions of those you respect and do the best you can. It's not going to affect your end of your bonus.