As far as NV is concerned, I agree with you in that more need to be issued and trained on them for that worst case scenario...however only 1% of swat sniper engagements involve the use of NV (as of the 2009 report), and that is for very good reasons.
That statement begs the question...did only 1% of engagements involve the use of NV because the other 99% did not require it, or did only a fraction of SWAT snipers possess and have the training to employ NV on a call-out? For that statistic to be of any relevance, what we really need to ask is A: what percentage of teams surveyed had NV available to them and trained in its use, and B: what percentage of teams who had NV and recorded an engagement utilize the NV during the call-out?
My extremely rough estimate would be that the majority of teams either don't have an effective in-line NV system, or they have it and don't train with it. It's a hell of a cost outlay, particularly when countless agencies can do little more than say "Here's a rifle, here's some ammo, everything else is on you." And it doesn't seem like a particularly straightforward purchase: outside of trying out other team's equipment during training events and such, there's not always much chance to actually test competing products on the market on one's own rifle. You could ask for T&E units..we all know how well that works out.