Out Alive would slay
LG would flop, as would Supernatural.

What do you mean?

Supernatural would definitely flop. Out Alive too. Last Goodbye would have slayed as the second single. Bruno and Rihanna both released ballads as their second singles and here comes Ke$ha with C'mon was just a WTF moment

Lecture time

Warrior, Wherever You Are, Only Wanna Dance With You, Supernatural, Last Goodbye are the only single worthy tracks left.

Warrior and Supernatural are from a dying EDM background.. they just don't make as much impact anymore, whether people want to admit it or not

Wherever You Are is amazing, and I love it. But I think it could be too corny for the public, but I am not really sure

Only Wanna Dance With You could make a great impact

But Last Goodbye is the better alternate pop..

Last Goodbye

People are missing the point entirely though when they say that C'mon was the main problem of the Warrior era.

Warrior was released in the US on December 4, 2012 (remember, first week sales of 85,000k? )
C'mon was released as the official second single on January 7, 2013

So Warrior sold poorly due to Die Young being the lead single. Sure, C'mon was released as a promo single before the album's release, but it didn't really have much impact (peaked at #99 on the Hot 100) so that can't really be considered an album killer.

Die Young was a massive success as a standalone single, but in the end once people had bought it they had no incentive to buy the album because due to her past singles, they figured that it'd just sound exactly like Die Young... so why spend all that money on the album just to get a bunch of songs that sound exactly like the cheap single?

Whether some fans like the song or not, Last Goodbye had the right sound that was popular at the end of 2012 and is still popular today, a pop song with indie folk influences, and it would have shown a different side to Ke$ha that would probably have attracted potential buyers a lot more than Die Young obviously did. Die Young showed little growth to the GP, yet Last Goodbye would have not only showed a lot of growth and a more genuine side of Ke$ha, but it would have been poppy enough to smash on the radio as well. Literally would have set the era up brilliantly.

Releasing Last Goodbye now would not be a good idea, because while it may still be a hit, it wouldn't have anywhere near the impact it would have done if released as her lead single, or at worst second single after Die Young, before the album's release. It won't help move (many) albums, therefore it'd be a waste of a good opportunity.

Ke$ha (and her team) would be better off making a new track in the same vein of Last Goodbye (similar, but not a direct copy), and releasing that as the lead single from her next album. Perhaps add a bit more humour and wit and classic Ke$ha into it like some fans say Last Goodbye is missing, but still keep the emotion and the power and the ability to connect so that the GP eats it up and still thinks, "Wow, Ke$ha's more than just a party girl." That way, she can get the impact and success, as well as the album sales, that she should have with the Warrior era.

Last Goodbye not only cashes off from the indie trend, but it is perfect for winter. It also has potential to be a cross format smash (A/C, Pop, Rythmic)

That chorus is something else really, it's also somewhat not too hard to perform.

Or Only Wanna Dance With you. It can easily smash too with good airplay

Yes.

No.
This is just an assumption, but I have no doubt there was a lack on interest. I just don't think you can blame a smash single which broke records for a lack of interest.

Any second single would've had the same effect. The timing of the Warrior era was so wrong. If they released a second single, say Last Goodbye, before the album it would not have had the time to take off and wouldn't have increased album sales by an large amount.

While treating it as a Warrior single now may not be so smart, there's no stopping them releasing it to capitalise on Timber, and sticking it on a new album/EP (like Va Va Voom or Radar) as it was only a deluxe track.

Not a bad idea, but I don't think just one non-partyish is what will fix everything and give her sure fire success. Her team needs to actually be smart this time because they made many mistakes.

I thought we were only at the 2nd single?

Last Goodbye.

Supernatural

There won't be a 4th single, though.