I have Moon in Leo. Pluto in Aquarius opposing my Moon in Leo, in the future, is my first real Pluto-Moon transit. Pluto in Scorpio was too short, it only lasted seven years so I was too young to experience the Pluto square Moon transit, in full. So Pluto in Aquarius oppose my Moon in Leo is my first, clear, experience, of a Pluto-Moon transit.Many of us seniors (aka baby boomers) were born with Pluto conjunct the moon in Leo. Then transiting Pluto in Scorpio squared our Leo moons.
So we have some experience of hard Pluto transits to our natal moons.
It could be beneficial. I do believe that the effect of the trine may be modified by the reception between the two planets, the house placements and so on. So perhaps it might not be highly beneficial all the time....?A harmonious aspect from Jupiter should be highly beneficial.