Darn, missed the bulk of the discussion. Not that I had much to contribute that others didn't cover.
@Horwath @fluffybunbunkittens @CreamCloud0 Particularly echo the sentiments of you folks!
So, yeah. Putting the power aspect aside, I also think it's lame to be pigeonholed into Hunter's Mark (however much you think WOTC are or aren't twisting your arm on that). That's something I've thought for a long while, ever since that first Class Feature Variants UA with Favoured Foe. It feels better when Hunter's Mark is just one arrow in Ranger's quiver, if you like. Even if it is, admittedly, a more commonly seen arrow than the others.
What I personally did/am doing for my Ranger homebrew, is build it in to their spellcasting feature. I've talked about this idea of a list of the "core Ranger spells" before here and there. It was inspired by the notion that "Warlocks should just get Eldritch Blast for free since it's so ubiquitous, and then they can use other cantrips they might not otherwise without feeling like they're handicapping themselves". This is what I've got down for it currently;
When you unlock spellcasting at 2nd level, you also gain access to a list of spells that get added to your prepared spells without counting against your total. At 2nd level, it's Hunter's Mark and Zephyr Strike. So you've got something for a long fight, and something to finish or open a fight, get the eff outta or into dodge. And both work for ranged or melee, no bias either way, so that's nice.
(I also retooled Hunter's Mark and Zephyr Strike specifically. I made Hunter's Mark still concentration but multi-target, you mark every creature you can see of a chosen type within range. You add WIS to damage, and learn any damage damage resistances/vulnerabilities etc. of marked targets. Borrowed from the Hunter feature. Zephyr Strike, I just made it's wording a little clearer. And removed concentration.)
You can cast a spell on that list without expending a spell slot and without requiring concentration a number of times equal to your Wisdom modifier (in practice, this is likely gonna be 1 or 2 for most of the game, but a Ranger that favours magic can do it more). And yeah, you unlock other spells every time you unlock a new spell level. Still working on the list, 5th level would give Pass Without Trace for example, right now I'm thinking it caps out at Guardian of Nature at 13th level. And then, to compliment the fact that the old standbys are guaranteed, I'm working on new spells so there's actually decent things to do with that afforded freedom.
I'm positive that a lot of players and tables would hate this, and there's no way in hell WOTC would
ever offer anything like it, but. Y'know. I quite like it so far!