it's not generally an issue of whether they NEED to score, with the pats -- they generally feel their job is to score every time the offense takes the field.
if the defense is good it might just mean even more offense as the opposing offense will be giving them extra possessions through turnovers and punts, they'll get better field position, etc.
if you take a look at the record setting 2007 team, they ranked 5th in the league in pass attempts at nearly 600, while still ranking 9th in rush attempts -- and this is with a top 5 defense in points and yards allowed.
they can continue to use multiple te sets, but if hernandez gets used as a receiver it's kind of semantics.
a lot of people are trying to divide up last year's pie so lloyd gets his slice, but just bear in mind the '07 team scored about 10 more td's than last year's team.
also, if it matters to anybody, we get the nfc west and afc south this year (plus @bal and v den)
another thing to consider is the possible impact light's retirement has on gronk's production --- will he be used more as an extra o-lineman, running fewer routes, with the addition of lloyd and subtraction of light?
ps
last year gronk put up 15/217/4 on a buffalo team that just added mario williams at left end.
edit:
light missed the second miami game last year, so I checked the stats, and it looks like gronk's stat line was pretty similar between both games, if that means anything.
I think profootballfocus tracks routes run, but it's probably subscriber info, although I think they have some kind of weekly article recap.
maybe you just get more routes like this one:
http://www.youtube.com/watch?v=MhamDo7F9yI
(gronk on far right, suggs on ground)