I hate Reapers because they like to grab your Seamoth/Prawn Suit and wreck it to pieces. Because of this, I avoid the Crash Site, Mountains, and the Dunes whenever possible.
The idea is good, but wouldn't that be kind of OP? Your statement does make a lot of sense, however, so I will not formally say I don't like the idea, because I do.
By the way, most Subnautica youtubers these days, 98% of their titles and thumbnails are some form of clickbait. Like all this Atlas Submarine nonsense. It's kind of obvious that if they add an icebreaker submarine, they'll add the Manta.
I personally hope that color scheme A for the Pinnicarid is added, but I do like C. Also, I think the space penguins on the arctic reefback are actually a genetic relative to the first creature.