Why not? Joe's had a great year and when he presumably drops it to Magnus it gives Magnus a nice rub. Plus seeing Joe wrestle every week is a bonus.
And Anderson is?
This is just another good use of Joes run. I personally wouldn't mind if that feud wasn't overrushed and if Joe retains at first at BFG, Magnus winning without any buildup would feel empty and emotionless. However, sooner or later it should happen, I just want Magnus to be a regular Impact cast by that time, aswell as Joe putting on great matches week by week. When the time is right, and if enough effort gets put into it, I can see Joe/Magnus beeing the biggest midcard storyline in TNA, or one of the biggest at least.