What for trading in cryptocurrency if bitcoin got stable? I sure all cryptocurrency coins not worth for investing and trading trough bitcoin have been stable, not changed price if bitcoin stable because movement from all altcoin price depending with bitcoin. I am glad with changed price of bitcoin up and down because time and chance for trading in altcoin, maybe if bitcoin have been stable not space not only for spot trading but also future trading will close. Maybe have usdt as stable coins and seem enough, doesn't need with Bitcoin got to be stable because give bigger impact for all cryptocurrency coins later.