I've been wanting to build a Northstar for a while now and this morning I took advantage of Balsa USA's holiday sale, so I've got a kit on the way! The only problem is I'm in the middle of a 1/3.5 scale sailplane build and won't be able to build the Northstar for several more months.
So what is the current consensus on mods for this? I'll be building it for an OS46AX. One of the earlier builds (Predmech/Yak Dude) in this thread angled the upper fuse sides in 25-30 degrees and added winglets to the tip sponsons. It really made a dramatic difference in the appearance, so I'll likely do that to mine as well.