My answers are as follows:-
i) I would like to see more fabrics in check pattern. Perhaps you can group them into different categories, say for business and casual, and built them with different collar type to let us have an idea of how the end product would like.
ii) Winter is coming and I surely want to have flannels and tweeds for suit fabric. There would be multiple choices of patterns offered by cloths from Harrison.
iii) We would like to know more...