https://www.reddit.com/r/bitfinex/comments/by15zs/bitfinex_is_locking_accounts/
https://www.reddit.com/r/bitfinex/comments/bzeh9t/warning_bitfinex_kyc_scam_is_in_full_play/
Thanks a lot. 3.3x is way below my range of needs so never considered Bitfinex in the first place. So was Binance.
Update regarding my experience on BaseFEX:
I have been trading there for a week. With $700 BTC deposit, I ended up $1600 BTC in my balance before my withdrawal yesterday. I trade exclusively on their BTC pairs.
The liquidity is way better than I thought. I can have my orders fulfilled or taken most of the time. I also began to develop some familiarity with their interface that I had criticized about. Their API is neat and comprehensive, pretty easy to integrate with my tools.
I trade a lot during the period of volatility. Some exchanges of even longer history often have the server overwhelmed(such as BitMEX) or error out(such as Deribit as I heard) during these times. BaseFEX is an exception, as I hoped, not much difference when the volume is up. I was told by the support that their backend is built and maintained by some former Huobi and OKEX engineers so I guess it's worth the trading fees I pay. I know it could be just that they haven't got to the overwhelming volume yet, but from where I can see they still have a long way to go to get there so I say this smoothness will be pretty much the case for a year or so.
I also got the feeling that they don't do inside jobs, at least not at this moment. I mean BitMEX is known for counter trading traders even though they never admitted it but they make you 'Order Submission Error' when you are close to liquidation. BaseFEX has very similar liquidation and ADL policies, BUT, a HUGE BUT here, no 'Order Submission Error' when I closed my position right before liquidation.
I also don't think they have insider traders that feeling I always got on BitMEX.
I'd also like to comment on BaseFEX's app. It is very fast and neatly designed! It is very useful and offers the same features as the desktop version. I mean I don't trade on app in general, but it is nice that I can manually close a position to prevent liquidation when I am outside.
I feel I am converted. Seriously considering relocating parts of my trading activities to BaseFEX.
Hopefully they justify my trust.