Telltale's games have all been on the easy side compared to most other adventure games and I was against this at first, but I've come to realise that the puzzles aren't the most important part of a good game. The story, writing, music and atmosphere in their games outdo almost all contemporary adventures. And we get a broader audience for the genre as well, which is hardly a bad thing.
I wouldn't mind some more difficult puzzles - my favourite Tales episode was the fourth one partly because of this - but TTG seems to be more or less happy with their current design formula so I'm not sure it could happen. I'm staying a loyal fanboy either way.
