The Shield to reunite?

After this week's Raw the triple threat match has been extended to include Dean Ambrose. It's the first time since the break-up of the Shield that all three former members will face off against each other so you'd think for such a monumental moment that the inclusion of Randy Orton is an odd one, especially when it'll result in 3 babyfaces in the match.
Since then though WWE have subtly on social media been dropping hints that the Hounds of Justice may be reuniting once more, in the same week one time long foes The Wyatt Family also appear to be reuniting with Rowan and Harper appearing to put aside their differences.
Is a Shield reunion on the cards? Would this be best for business? Would it be an admission that the Reigns push was a huge failure? And is it wise to redo the group so quickly after their split especially as the dynamics now would surely change?

What do you think will happen in the main event?

Raw ratings are falling.  
The stock market responded badly to the last Network subscription number.
Part-timers brought in for Mania like Sting and Undertaker haven't been heard of or mentioned since then.
Lesnar is off screen right now.
Crowd favourite DB is injured.
The WC has been booked like a weak chump.
Characters that WWE had been building up, like Rusev and Wyatt they've effectively killed.  

So, yeah, I can see why there's a panic to do something "big" like re-uniting the Shield.  

I hope that the Wyatt's are coming back together.  None has done anything of note individually.

It would be really disappointing to see them reunite The Shield so soon after breaking them up, the day they do reunite will be huge, so I hope it doesn't happen at Payback.

I can definitely see them hinting at it and even doing it mid-match to take Orton out but Rollins will cross them again and win.

The only way I would get behind a Shield reunion at this point is if they could defend the WWE title with Freebird rules.

All I would hope is that they make sure Reigns and Ambrose remember their bond in the build up. I would hope and expect these 4 men to be involved in any possible Elimination Chamber this summer and they need to keep some of the Shield's past worth dissecting in a build up to that.

I can't see them reforming based on the need for popular and main event status stars to be a part of MITB and also the aforementioned possible Elim Chamber.

If we're thinking 8 men, and that Rollins has a future date with Lesnar lined up so will be champion at this point, then you'd have to guess Orton, Reigns and Ambrose are going to be in there. Wyatt probably, Ryback likely. Rusev, Cena, Ziggler, Sheamus, Bryan (if back) and Neville (for the spot potential) must all have a chance of featuring.

There may be a Shield reunion somewhere down the line, but I think it would have to be a one night only deal, and only when all 3 guys are faces. I can see a Triple Powerbomb on Orton though.

Rollins is doing so well as a heel I just don't see the shield reuniting so soon after breaking up. Reigns could turn heel ala Batista-esque and join the authority but that's all I can see happening in the forseeable future.