It would be sad if Poloniex becomes insolvent. It would make Bittrex one of the few good exchanges for altcoins.
Remind me a lot when still using poloniex, they have really slow support that I need to wait many days just to solve a problem, a problematic exchange like that didn't deserve to be #1 exchange, while bittrex is really supportive to their client.
and see now, poloniex always have problem with their client even freezing their client account without notice, poloniex will fail for good.