Good thing so that these newbie investors wont need to buy old account from bittrex,because account selling has worsen from the past few months.Bittrex would have a good volume of coins if this would happen in the near future,signing up was disabled so that the team of bittrex can improve its user capacity because from the late december 2017 theres a lot of lags when we are talking about thousands of trade volume in a single coin.