What am I missing out on by buying a Galaxy Watch 4 now

[UNCMo96]

I currently have the first gen galaxy watch. I’ve had it for years and it’s served me well. I was thinking about upgrading to one of the wear OS galaxy watches. I see I can get the watch 4 classic refurbished for 100 bucks or so. I realize the watch 6 classic has a better screen and battery battery. Are there any compelling reasons why I should get the 6 over the 4? It seems like the changes are more evolutionary than revolutionary. My main reason for the watch is notifications, weather. Having google maps on the watch would be nice for walking around w/o having phone in hand. Also camera control. I don’t sleep with my watch.