This for me sounds really kind of the opposite of "wild" more mild, like a 5E homebrew.
YMMV, of course, but it'd have to depend on the fullness of the rest of the bonus action economy and also the structure of the core system. Without the core system identity expressed I just went off 5e's designs 'cause... well. You haven't really outlined anything.
Like in 4E the ranger can just do 2 shots per default (at will), or the later simplified one would just get another basic attack when the first hits.
Cool.
Similar 13th age you just get a 2nd autoattack if the first one has an even roll.
Sure.
Your design notes for "Wild" on Spellblade was just the PF Magus's melee weapon spell attacks. I've got that in my Swordmage design and have had for months. And it's not even their core identifying feature, but a late-game bonus.
And for you that would just be a "5e Homebrew" class.
Then you hit on a FF Magic Structure that's been adapted to almost every edition since 2e, and one Mike Myler made for 5e in one of his recent releases.
And then you hit Truenamer which is straight out of 3e and there's at least a dozen of those online including C. E. Usiku's version which he's sold on DTRPG.com for the past 6 years at this point.
None of these are "Wild" they're just concepts that have been done but never as core structures.
The post I was responding to, which lead to that reply chain, was trying to build up unique stuff for each class and was like "Barbarian rage is already unique" so I took that design note and tried to do something 'unique' for Ranger that fit in within the same level of creativity and change.
You want something wilder? Take a look at Paranormal Power. I released that years ago, now, and the Esper's definitely out there in how it wields psionics. I've even got the Wilder in there as a Bard Archetype.