thanks to all who read my suggestion carefully and give helpful feedback.
up to now 106 users voted, about 50% support 1 BTS or 0.1 BTS transfer fee, at least this shows that it's not wasting time to discuss this topic, there are many users/shareholders who are very unsatisfactory on current fee stucture, anyway, no need to rush, it is still needed to do some deeper review/analysis on some key topics, from my side, I'll try to dig on below topics:
1.what a transfer fee is reasonable according to cost and competetion?
2. I am not intent to remove referral program, now I just consider to reduce the transfer fee, however currently the referral program has a tight link with the transfer fee. so we cannot ignore referral program, we need to ask below question:
if the referral program could only work with a transfer fee which is much higher than reasonable level and then actually enslave the users/shareholders, does it conform to a valid business ethical?
3. is it possible that Bitshares become a platform that businessmen can develop their business of different types upon it with great convenience, and meanwhile without enslaving users/shareholders or disturbing each other?