I find it odd that anyone would make an issue of the statement that there are groomer speed limits to skis like S7s, etc. First, few recreational skiers - even decently higher end ones - can actually push the "limits" of these skis. Second, those limits, whatever they might be, on groomers are way past reasonable groomer skiing speeds most days at most resorts. So while there is a limit, it is mostly a theoretical limit that most skiers should never hit. And if you step it up to the Supers, I've seen some decently charging skiing on those - so again, while I am sure there is a limit, I suspect it is academic for most.
Obviously these skis are not ideal for ice - on or off piste. But hey, most days - at least in the west - are not ice... And you can muddle your way down on that when needed.
As to the patrolling comment, the S7 (not even super) is definitely a rather popular ski with my local pro patrol. They cover a pretty broad range of terrain which includes a couple hundred slide zones, cliffs, and chutes in addition to groomers. The fact that a ski is notably popular with them is interesting. (oh, and an as aside to Dawg's Kuro & Pontoon comment, there is one patroller at my home hill who seems to ski Kuros exclusively and is routinely seen skiing &/or cutting an icy maybe 55-60 degree pitch... Similarly, a few years back I sold some used Pontoons to a pretty senior pro patroller at another nearby area - he told me that for the rest of that season he used them at least 80% of the time & afaik is now using modern designs exclusively. So I think the notion that modern skis do not have usable edges is more one of ingrained technique & expectation than what the ski can actually do. )
The biggest general complaint I've heard wrt to the S7 family that would impact a decent number of people is the tendency under certain conditions for the tip to plow/deflect due to the super steep kick at the end. Maybe this is at the root of some of Dawgs comments?
OP, you might add the Bent Chetler to your list. It'd probably meet your specs very well. And on the indy front maybe take a look at the Praxis Concept (I know Tabke used them for some of his runs in the Revelstoke comp), DPS 112RP, and a couple of the ON3P models - and maybe add the Caylor , ideally w/ rainbows and unicorns and beer, to the list of already mentioned ON3P skis (if you like really stiff & want to ski switch...).
BTW - what is it w/ the non-stop references to Kastles? Every time I look at those they look like well built and super-duper-euro-sexy-marketed antiques. Every time I consider trying some, I just can't make myself spend valuable snow time on something so old school in design.