To weigh in my .02 I tend to be like Ghenghis_Ska in that I have an idea before I start. Even before I buy a set I have an idea of what I want it for but again that is just me.
I purchased the planner when I got my first couple of sets for the reason that most want the starter builds, I just thought I would make my own starter builds which actually tend to grow as I write the matching adventure.
Perhaps this is where the community can help WWG fit the bill for help with the overwhelming possibilities of the TLX sets as Zenguy suggests.
I understand the need for such starter builds to help get the idea but that is where the guides and user builds can really help out new users as it did me. Working with the Mars Station and props also helped me get the hang of edging and gluing.
Well I guess it's more of a nickles worth than two cents
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-D²