Inbox: Should Angels trade for proven closer?

Any chance that the Angels will try to acquire a closer or are they "all in" on Blake Parker?
-- @kevin3841
Parker has done an impressive job of turning it around after a rough start to the season, but I think the Angels will ultimately explore the trade market for relief help this summer. The Halos' bullpen has logged a solid 3.70 ERA this season, but its 12 blown saves are tied for the most in the Majors. Losing Keynan Middleton and Blake Wood to season-ending Tommy John surgeries were significant blows, so I think it would make sense for the Angels to fortify their back-end corps.
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Several "established closers" are expected to be made available on the trade market, including the Royals' Kelvin Herrera, the Orioles' Zach Britton and the Padres' Brad Hand, so they could be potential targets if the Angels are looking to upgrade.
Any chance we get a shot to trade for Blake Snell?
-- @cura_MLB
The Rays were already involved in the first major trade of the year, as they sent closer Alex Colome and outfielder Denard Span to the Mariners for two pitching prospects last month, but I think it would take a massive haul for Tampa Bay to even consider parting with the 25-year-old Snell, who is enjoying a breakout season and is under control through the 2022 season. I don't see the Halos dipping into their farm system to that degree, especially since their rotation has been one of their strengths this season. Since May 1, Angels starters have logged a 2.61 ERA, the lowest mark in the American League.
Snell is an enticing talent, but the Angels already have an impressive stable of young, controllable arms in Andrew Heaney, Tyler Skaggs, Shohei Ohtani, Jaime Barría and Nick Tropeano, all of whom are 27 and under and could be fixtures in Anaheim for the near future.
I know why the Angels are calling up and then sending down Barria, is there a cap on how many times they can do that throughout the year? 
-- @hoekedonphoto
Players on a 40-man roster are given three Minor League options, and a player loses an option when he is sent to the Minors for a span of more than 20 days. An option applies to an entire season, so Barria can be sent to the Minors and recalled to the Majors any number of times over the course of a season while only losing one option.
The Angels have optioned Barria four times this season, though he's often returned to pitch in the Majors after spending the minimum 10 days at Triple-A Salt Lake. During those stretches, Barria will usually make an abbreviated Minor League appearance to keep himself sharp. He allowed one run over three innings for Salt Lake on Thursday and will be eligible to rejoin the Angels on Tuesday in Seattle.
How long will it take for Ohtani to get better against left-handed pitchers? What does he have to do to get better?
-- @MerriCao
Ohtani has posted a 1.057 OPS against right-handers and a .451 OPS against left-handers this year, but I don't think he nor the Angels are too concerned about those splits. Ohtani's numbers are probably skewed by a small sample size, as only 33 of his 129 plate appearances this season have come against lefties.
Ohtani posted even splits in Japan, so he has a track record of hitting lefties well. His numbers could start to even out in time, as he familiarizes himself with the pitchers around the league and continues to adjust to the higher level of competition.