Thanks for sharing.
I use Kraken, Gemini, and Gdax. I've been looking for a new margin exchange as well and may have to go with Poloniex. Kraken needs to get their schtuff together, awful platform.
I agree, their services are great for margin and advanced but platform stinks. If margin does go away there is really no need to trade there for me. I could do without advanced orders for a while but man, they could be so awesome if they got it all together.