I like the ranger alternate features a LOT, with the possible exception of the Favoured Enemy replacement which is just a watered-down version of Hunter's Mark that still requires concentration and only lasts 1 minute.
Deft Explorer is the alternate Natural Explorer feature - at 1st level you get expertise in one skill plus two languages, at 6th you get a 5ft speed increase and a natural climb and swim speed (which is the best bit), and at 10th you can give yourself a few temp hp (which is pretty feeble at that level) and recover from exhaustion faster.
There's three new fighting styles which to be honest probably won't be used much. Learn 2 druid cantrips, 10ft blindsight, or a +2 damage on thrown weapons.
Primal Awareness can replace Natural awareness, as you increase in level you get a bunch of druidy divination/communication spells which you know automatically and can cast once per day each without using spell slots. Speak With Animals, Beast Sense, Speak with Plants, Commune with Nature, Locate Creature. I really like this.
Natures veil can replace Hide in Plain Sight. Bonus action invisibility that lasts to the start of your next turn, proficiency times per long rest. This is a great improvement too.
There's a few spells added to the Ranger list too. Nothing that really stands out to me other than Revivify, but I'm not much of a character optimiser...