What's to think?
Look, any division needs three things to be relevant.
1. TV time
2. Solid performers
3. Solid matches/storylines
That's about it. If you have those three you have yourself a division worth a fuck.
However, the thing that whizzes by people's heads is perhaps the fact that in order for TNA to push the tag division, the tag division needs to have shown an ability to be an asset for the TV show in the past. It needs to show that if TNA undergoes such a push, it will reap some kind of reward from it aside from giving a bunch of people on the Internet a stiffy.
Fact is, TNA has never truly had a major successfull period in order to assess whether the tag division contributed to that. Numbers wise, it's always been average at best. I'm only basing this on TV ratings and perhaps attendance, I'm not privy of their PPV information even though considering their overall popularity, the economic situation in the USA as well as the rest of the world and the fact that 'wrestling' is not the first thing on people's minds anymore, I'll say they're not exactly sky high.
Thus - TNA feels that there is no reason to push the tag division. There is no basis for this action, there is no proof that hiring more talent, making creative work harder and come up with EXTRA storylines specifically designed for the tag division and chop off a chunk of TV precious TV time that could be used for someone who DOES draw SOMETHING, will do jack shit for the show.
Therefore - the tag division is where it is right now. It's not good, it's not bad, it's just there occasionally for those who enjoy it.
Truth of the matter is that tag wrestling was cool in the late 90's because of four teams (Hardy Boyz, Team 3-D, Edge & Christian, Jericho and Benoit) and a bunch of stuff you find in your garage like a ladder and a table. People were fans of that, not the concept of tag team wrestling.
There is nothing exciting about someone smacking someone else's hand so he enters the ring. There is nothing exciting about two dudes walking down the ramp together. There is nothing exciting about one partner breaking the pin-fall or any other tag-team triviality we've seen a million times.
The reason why tag-team wrestling was good in the late 90's (and prior to the that in some extent) was because the dudes were talented and the writing was fun. Does this prove then that tag team wrestling is the ultimate money sucking machine? Absolutely not. All it proves is that it's not divisions that draw money and people, it's good ... fucking ... television.
Focus on that, TNA. The minute you have that, you can scrap the Knockouts, scrap the Tag Division, scrap the X-Division and stand in shock and awe ... as nothing changes. The divisions are there to add variety, not quality. If you didn't have quality in the first place, everything else is rendered obsolete.
"Oh, you have 15 kinds of cow shit? How delightful!"
It doesn't work like that.