I've now gone through and set block caching and timeouts where appropriate on all blocks (just did ones assigned normally before, now covers ones from Context too).
Also added Views Lite Pager (Proposal K), which should on a big site like ours saves a heavy node count just to work out what pager numbers to display. Instead of the normal next, prev, last, first, 1-9 options, it now just has 'next' and 'previous'.
Am now working though major views and adding the new litepager at the sme time I check/tweak the caching.
Added to our makefile recipe. Updated summary.