Where I live, sequestration is rare, even in high profile cases. There are many newer elements to how jury selection is done in my county, but the main principal is that each juror has to say that they are capable of being fair and justice, of following the law, and of following the judge's instructions. It used to be that LE and attorneys were pretty much automatically excluded, but no more. It's still somewhat rare for LE to be impanelled (depends on the case) because of their work requirements.
Sequestration may not have the right effect, anyway. People are put up in hotels and hotels have televisions. I've never heard of jurors being disallowed from speaking on the phone to family. People have smart phones. Taking away all outside communication has been found to be hard on both the physical and mental health of the jurors and is rarely done (never done where I live).
And there has not been a spike in appeals - the opposite, actually. And the appeals that have been entered had nothing to do with the jury not being sequestered or with issues related to jury selection or fairness.
There's a body of academic literature on sequestration affects the health of jurors, and the verdicts. It should be very carefully considered, because most humans are capable of putting aside biases picked up from media coverage and paying attention in the courtroom. We also have a commitment to faster trials here (part of a larger nation-wide program, for which the county got grants to implement). Unfortunately, most of these articles are behind paywalls, but the upshot is that sequestration is a questionable practice, both in the past and presently.
Are the jurors to be sent to their rooms at 4-5 pm daily, locked in, deprived of television, radio and cell phone? If so, the chances of having many jurors fall ill or begin to exhibit psychiatric symptoms such as anxiety (already a problem in murder trials) is higher.
People like ourselves might be excluded during VD, if the right questions were asked. I was excluded from a criminal trial based on the fact that I had independent views and expertise on genetics, DNA collection techniques, etc (this was 10 years ago though, not sure I'd be excluded now - but I couldn't serve on a long trial due to health issues, at this point).
I'm putting links in, just in case some of you can find access through your own library resources.
THE AMERICAN CRIMINAL JURYNANCY JEAN KING*IINTRODUCTIONThe criminal jury, after its importation to North America by English set-tlers, evolved into a unique institution in the United States. Across the centu-ries, prominent features of American law and culture have left their mark onthe criminal...
heinonline.org
A quote from the following article states that "there are prison systems that provide more privileges"...than some sequestrations"
The impact ofsequestration on juriesAlthough intended to shield the jury and ensurea fair trial, sequestration's potentialfor unnerving andeven infuriating jurors may in factundermine the pursuit ofjustice.by James P. LevineW ander into the Holiday~Inn on New York City'sStaten Island most...
heinonline.org
(The first full page of the article is visible).
These articles about the harm of sequestration began to appear in 1996. My county's program of new style jury selection began in 1999 and didn't really become more or less system-wide until 2005. So we have had no sequestration since 2005 except in one matter involving a criminal conspiracy - but the trial was swift (8 days) so that helped.
Last article states that non-sequestered jurors experience trials as relatively unstressful but sequestered jurors find it more stressful (article is in 2005), with the stress levels rising with the length of the trial, and women more prone to stress reactions than men in all the cases studied:
(They debriefed the jury one month after the trial; collected responses at that point; and also collected responses from jurors in trials without a debriefing - the debriefing appears to have made no difference in the outcomes).