On my list!!
The Note 3 does everything I could ask for, but Sammi dropped the ball by not making it at the least, water resistant. The S4 Active showed that they could have, and the new S5 is rumored to come standard with IP67 (3' for 30 minutes)
I won't likely upgrade to the Note 4 - I can't see it having anything that spectacular over the 3, so a good protective case that adds true water/dust protection would be perfect.
My only concern with the OBEX is the clear screen protection material they choose to use - most plastic screen protectors are poor at best, and get progressively worse over a very short period of time . . .