I've never made blueberry mead, but I saw this recipe on a different forum:
Recipe:
12oz pkg Frozen Blueberries (thawed to room temp)
3.5lbs clover honey
1 tsp Flieschman's yeast
water to 1 gallon
OPTIONAL: 1 vanilla bean, split/scraped (this was an afterthought, but sounds like it would be good
this is a take -off on the Joe's Ancient Orange mead, hence the flieschman's yeast. Apparently, this foams up a LOT from the blueberries so they recommend leaving lots of headspace until the most active fermentation subsides, then top up.
this recipe is as easy as it gets- I can't vouch for it though.
I think the simple recipe you're thinking of would work just fine, too. Maybe a nice neutral clover honey.
Lorena