ideally a large home theater with high ceiling and stadium with 2-5rows allows for better "recreation" of the top notch THX theater.
home theater is a lot compromises.
if you can build a room and install cinema hardware and a 4-5meters scope screen (mp of course and please not woven stuff!!!) and a rack or two
then you got yourself (after careful tuning, settings, parametring, eq, placing etc)
THE cinema experience.
heavy deep bass resonators help also to make the room go LOW AND TIGHT
as for fly overs indeed surrounds qty and height of placement (following stadium rise)
help give that panning sensation. at home it's hard to get that especially with just one pair of surrounds. large dipolars help a bit.
if you got rows then count around 1 surround per rows space. 3 rows= 2 surrounds per side, 4 rows=3 surrounds per side
there's also a wrong tendency of people always asking for surround sound, louder etc
a movie is mixed and not to make lambda consumers happy because it has loud surrounds during 2hrs !
calibrated sound on the 5 7 speakers should 75dB (pink noise) and 85dB subs and not 90db on the surrounds!