Honestly, I think the Ranger class has outlived its usefulness. Take the martial stuff and blend it with the Barbarian (and perhaps then blend both with Fighter)
As much as I want to disagree, I can't come up with a good argument. I found myself bored and with little but a copy of my 3.5 PHB, this weekend, so I started making notes for what I'd do for 5e.
When I looked at the classes chapter, I could not see any reason to keep the barbarian (that being the first class, alphabetically, it was the first I looked at). Is there really a reason the base fighter should be restricted from taking
any of the barbarian skills? I don't want to have to multiclass or pay double just because my fighter was part of a march campaign and learned to forage. Rage could probably serve just as well as a feat tree or theme. Ditto with the danger sense stuff -- shouldn't anyone who devotes their life to standing in the way of swords develop a feeling for when they're in that situation?
Looking at the ranger, I find myself asking similar questions. Tracking has been available to anyone as a feat or NWP for two decades. I don't like the idea of
anyone being better at armed combat than the fighter, which rules out TWF and archery focus. The animal companion can't be a core concept if Aragorn is a ranger (and he must be, or we've completely scrapped the origin of the class). That leaves stealth and survival (the main purpose behind the skill monkey ranger) and favored enemy. We already killed survival by rolling the barbarian into the fighter. I'm okay with the ranger advancing a bit slower than the rogue in stealth, or making the multiclass trade-offs. And, favored enemy provides a third, meaningful, path of focus to a fighter. Fighters can choose to bolster their battle prowess through unchecked adrenaline (rage), careful study of certain threats (favored enemy), or straightforward practice (weapon mastery/specialization).
Probably worth noting as part of the above thought process, is that I've also come to the conclusion that the feat system sucks. It isn't a horrible idea to have some sort of perk system. The 3e/4e feat system was just such a huge, ungoverned bucket that it's unworkable at any real scale. While I wouldn't go whole hog on either the 4e powers system or power sources, I think having class abilities and, maybe, source abilities would be a great way of controlling the bloat, as well as providing a framework for extensibility (why, yes, I am a programmer). The basis already exists by having fighter and wizard bonus feats (from a select list) and the rogue's "special ability" choices.