First, good to hear you are relatively unscathed, and insurance takes care of the rest

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Oke...this is what is really gotten me off of two wheels on the street. I'm not worried about deer in the woods, I'm making too much noise on my KTM for them.
August of 2012 I hit a deer, about the same speed (55-60) with a 08 Kawi Concours. Hit deer and while trying to avoid, caught big divot in edge of asphalt (country roads), with front wheel, bike flipped, we flew through the air and bike landed on me. Crushed the collarbone, lots of ribs broken, knee and hip messed up, back is permanently screwed.:banghead:
Bought a new Concours while I was still awaiting surgery to get a plate put in the collarbone. My usual 15 - 20k yearly motorcycle street mileage is now a grand total of 8800 for about 18 months.
I am so glad to hear my decision to get a :spyder2: is the right one. I've hit 3 deer in the last 4 years, 2 with motorcycles, and literally dozens of near misses. Looking at the damage and the report of your injuries, you could have done worse in a small car.
As to deer whistles, I spent the bucks after that last wreck on an 'active' electronic deer whistle. Can't say if it is effective, I've had close calls since then, but it has the added feature of alerting pedestrians since it sounds like an annoying siren. It does appear to get a deer's attention, but you never know which way one of those critters will leap. I'll be putting that doo-dad on the spyder though as soon as I get it home Sunday.