My sentiments exactly. I switched from 5e to OSE Advanced and have not looked back. I also backed the Dolmenwood kickstarter and am hoping to run that when the books drop (I'm prepping using the pdf's released so far, but I find books easier to use), even though I'll likely be running things virtually.Recently got OSE as well and it’s the simplified D&D with some modern touches I’ve been wanting.
A few house rules to make it less deadly (though still a challenge) has been super easy.
Love it.
It’s my D&D of choice
With re: to deadliness, I go back and forth. I've been using Goblin Punches' "Death and Dismemberment Table", which really ups the survivability of characters with the trade off of having them out of commission or mangled as a result. It really meshes better with a "troupe play" style, where characters have henchmen or backup characters that can step in if someone needs a week of rest due to a concussion, or an arm or leg injury, or a cracked skull. My players have enough trouble with the NPCs dying (henchmen) when they hit zero, they'd go out of their minds if the PCs did too. LoL.