I think you hit the nail on the head. As it stands now there are two phases of a daily game session.
When I played in W7 I was definitely hardcore spending anywhere from 5-8 hours per day playing. But as time went on and my playtime went down I noticed the following trend which makes the previous posts comment ring bells.
As a casual player who can spend 1-2 hours per day playing, If I want to be competitive with LP I miss half of the game experience. I have to spend that 1-2 hours producing/searching for curious to keep me on track for LP with others. Then I log off and the next day rinse and repeat. If I need to build a house, wall and hunt I have no time for that. So it seems like there is two phases of the play session. The first and most important is LP curio collection/study. The second is the productive what do I want to do in my sandbox. I think if you could find a solution that merges these two phases it would be a huge step in the right direction! I actually keep checking this game from time to time in hope for the gameplay breakthroughs that will take this game to the commercial market.(Polished Sandbox MMO)