Anyway I set up a short on low leverage and moved it down to 1x, at which my liquidation price became $100M (I'm guessing this is a placeholder when the number won't be reached and a little btc easter egg given the 100m target Satoshi had), anyway does this mean a short on bitmex at 1x or less won't actually liquidate much like a 1x long? Is there a good way to conceptualise this as I'm not sure I can find anything on other sites (same is listed for 0.04x too so I assume it's the same for all <=1x leverages).
I think there might be extreme edge cases related to liquidity where 1x positions can be liquidated but for practical purposes, they can't be. A 1x short is basically like holding synthetic USD.
We also know from history that Bitmex will just shut down trading in an extreme liquidity vacuum, like the March crash.
Depends on the trend. Longs have been consistently paying shorts for the past couple months. https://coinalyze.net/bitcoin/usd/bitmex/funding-rate-chart/btcusd_perp_fr/
You could also take a 1x position on futures and pay no swap fees. The premium or discount can move against you though. That's the trade off.