I've chimed in a few times with the same issues. I decided to get a new Fender PJ instead of the 44-64. The Performer and Pro series basses truly beat out My Lakland and others I've tried as of late. Just a side note, I've been anti-Fender for all my life...but now I totally "get it." The Yosemite pups sound so F'ing great, especially on recordings. It's far clearer, open, quieter than my DJ5. It is "scoopier" than Lakland pups, but that can be remedied with a preamp. Plus, the Fenders come copper shielded already.
I would capitulate that the necks "might" be better on Laklands and I like the bridge and saddles on the Lakland better, too. But man....this new Fender PJ has a great neck, amazing sustain, and lower action then I ever expected out of a Fender. I'm NOT a fan of the nut width on the Fender (1.6mm vs 1.5 on the 44-64), but I'll get used to it. I can play any bass just great.
Not trying to be a wet blanket in the Lakland fanclub, but I kind of expected more. I always heard Lakland was "better" than Fender. The finish and construction on my Fenders are great, near perfect. My Lakland has some finish issues (horribly cut pickguard and pup cavities). Those along with the noisy and dark pup debacle turned me off to buying another one. I hope Lakland updates many things going forward. I think they were great bases 10-15 years ago, but nothings changed since.
Also, I've tried several basses to arrive at this conclusion. I hope it doesn't sound like I'm grinding an axe on just one bass.
That all said, I don't think a USA Lakland would be worth the upgrade. It's the same electronics.....likely to have similar issues noise-wise, eh? Is it worth the risk? What do they say....anything past $2000 gets into the realm of diminishing returns? If I'm going to spend that much, I will scrutinize greatly all the aforementioned issues, plus some.