I've given this a lot of thought over the last few years. At first glance, the impulse is very human and understandable not to want to be alone when facing death, something most of us fear above all else. I'm sure there is some comfort that could be taken there with another person who truly understands.
However, because of the current social attitude, religiosity, and subsequent pathologizing and legislating of suicide in our society, trusting anyone with your true feelings carries significant risks. Any person wanting to meet for such a purpose, here or anywhere else, could be a predator, law enforcement or healthcare agencies looking to 'help' you, or be part of the growing moral panic mob targeting SS. Any honest person who does meet you and somehow ends up surviving when you don't could be held legally liable for your death, or vice versa. People close to you in your real life will often turn on you like lightning if you tell them, whether out of genuine concern or something more selfish. It happened to me and I lost everything I valued in this world (excellent job, gf, best friend) solely because I expressed how I was feeling. The steps I took to try to make it easier for them backfired, every single one of them carrying an enduring personal cost for me.
All that to say, it is an interesting idea but be prepared for the very worst aspects of humanity ready to exploit the vulnerable before you trust someone with such an arrangement, and above all else be safe. Actual examples of all of the above happening exist.