I lined up under the old system. I have yet to line up under the new system. It hasnt worked for me to go there early and then return later the same day. In my experience there has been variation in the store experience since the new system. In one case the new system made the shopping experience more pleasant in FSH, but in another it did not.
My first visit under the new system I arrived in the afternoon, long after the morning queue was over. There was a public holiday that week, but I was still able to get an appointment for late afternoon. I looked forward to looking around after I secured my appointment. On that visit, I found the store in the afternoon to be more uncomfortable than it was with the line under the old system. At least under the old system the line was in one part of the store. On this visit, there were so many people sitting around, I guess waiting for appointments, it was unpleasant. It seemed that every spare chair was taken up by someone. In the shoes for example I wasnt sure if people were waiting for SA or just sitting around. I soon found out that they were just sitting around on their phones or staring at customers, not waiting for a shoes SA.
On my second visit to FSH since new system, I also arrived in the afternoon. I wasnt bag shopping, so did not plan to queue. This was in Feb, quieter time of year, and I found the store to be very pleasant this time. No line downstairs, not many customers sitting around, it was very nice.
Ideally one should plan FSH visits for non-peak times of year (off season, no fashion week, no public holidays). If you chose to line up, it wont be as crazy and if you arrive in the afternoon, there is still some chance of a same day appointment. And the store will be pleasant to shop in once the appointment seekers clear out after opening.