It’s more so that getting to lvl 100 is an achivement of build making and skill. And not all about grinding.
Getting to max level is not something you should be able to put into a calculator and say i do X amount of Xp/hr i will reach lvl 100 in 8 days. While you can do that but have to do it without dieing. I dont know, i prefer having xp loss rather than no risk all reward for just playing like some sort of a participation trophy, but hey thats just me.
I do think the 1 life per map thing can be revisited though, i prefer the poe 1 style of you having 6 portals to complete a map. Juicing up a map and investing in it and you die somehwere in the map it shouldnt be lost.
Same for endgame bosses, i am OK with boss resetting to full life. But you should have 6 tries. Basically having 6 tries to do a 100 to 0 on the boss.