Love hasn't been healthy in 4 years, his defending has gone from bad to awful over the last 5 seasons. He hasn't been the kind of scorer who can take over a game in... ages.
His rebounding is nice, he is a good spacer on offense, but between his bad D and his health... he could be making HALF of what he is and I don't think he'd represent a big enough of an upgrade to consider.
I honestly don't think, even as is, he would be represent much more than a moderate upgrade over Saric, who has played surprisingly well when not paired with Kaminsky. And I am not trying to hype up Saric, he is somewhere between a low end starter and high quality reserve.
Kaminsky, outside of a couple games, has been a disaster. Hopefully Ayton's return puts Frank into the fringes of the rotation.