I adore Daniels, and I have for nearly a decade now, but as of this moment in time, there's no place for him in TNA.
The only way I consider bringing him back is if it's to revitalize the X Division. While I too believe he's World Championship material, most would disagree, and most matters in this case. Our WHC tier is already flooded plenty with a number of key players, so bringing in Daniels again would work so long as it mean replacing someone/something that isn't working particularly well.
Assuming the talent cuts hit relatively soon and a few guys are released – including at least one who gets TV time – I'd have no issues with his return.