For instance, half of your fabrics are horizontally-striped, which I would consider both an immature look and stylistically unsound (with vertical stripes considered 'slimming'). I associate Lacoste with consumers who try to compensate for style sense with money - like the 'Rock and Republic' of polos. The Lacoste shirts cost $90 apiece, but even their "!" slim-fit line still are cut like squares. I don't think this is your crowd who cares about fit.
Consumers in the $100-200 polo range are used to higher quality items rather than striped/branded items - e.g. the Ralph Lauren Black line is in that range, and the whole line focuses on Italian cuts and fabrics with no visible branding.
If I were in your position, I would offer less fabrics and of higher quality with marketing to target more of the Tom Ford-wannabes. Something along the lines of "Fit Frames Quality." You could offer almost a luxury fabric menu in basic colors that really tells a story of the piece of cloth, helping people to become more viscerally attached with what they wear. With a current slogan of "Be Unique," I think you are skirting the fact that people willing to go through the rigmarole of customization, test shirts, then the custom manufacturing process are pursuing a display of flawlessness. The advertising fails to capture this desire for perfection - you are selling choice, when I think that you need to highlight the intersection of fit and quality.
Furthermore, monogramming is a must-have feature.