Well done Gavin.
Regarding hypos.
Personally, I'd take more hypos if that also meant 'less severity' of hypos. I expect you'll find that moving forwards the Libre will help to spot hypos, make it easier and quicker to come out of hypos (testing BG can help as there's a 10-15 min (or something) lag on Libre) and help to learn when you go low and therefore help you to prevent some of the hypos happening.
In terms of hypo awareness, the key seems to be not to reduce the amount of time spent in hypo territory.
People who spends hours per day in hypo will get to a position whereby the body considers that as normal and therefore doesn't provide symptoms when lows happen.
So, using the Libre to get out of hypos quickly and not spend too much time in hypo territory is a good position to be in if you can.