I think this idea would be very simple to implement, and wouldn't impact anyone that didn't want it.
I think there should be an option in settings where you can set your hourglass to "ON", "OFF" or "CONFIRM".
If you like things as they are (as I do), you leave it ON and everything stays as it is now.
If you don't like hourglass and you never use it, you can turn it OFF and the interaction disappears. The same way you can disable ship sitting and trinket interactions. If you change your mind and want to give it a try, you go into your settings and turn it on.
The third option "CONFIRM", you can still interact with your hourglass, but when you activate it, it comes up with a short warning. Something along the lines of "Once you activate your hourglass, other ships will attack you and you won't be able to run away. This cannot be undone until you have fought for 15 minutes, or your ship has sunk."
There have been multiple occasions where I have accidentally activated the hourglass, either because I didn't understand what it did, or because I was trying to use my quest table and missed the prompt. I've also been on the other end of the interaction where I've emerged to a fight with someone that clearly has no idea what they're doing and doesn't want to be fighting and it just sucks for both of us.
Or maybe they could create an hourglass tutorial where you dive to fight a skeleton ship. Anything to explain to new or inexperienced players how it all works. I don't think it should be as easy as it is to accidentally pledge yourself to an hourglass fight when you have no idea what it is and definitely wouldn't want to do it if you did.
