Why Oro really wanted to revive the 4

[Rikud0 Sennin]

Oh ok thanks guys n girls. bad translation.

 

[aikinindo]

he literally said "i have personal information (DNA) from these 4... I like to 'ACQUIRE' too ya know"

Here. Fixed it.

 

[-ahhimane-]

Actually he said that he already have the DNAs of the four Hokages since he likes to collect such stuff for something big in the future. That means he was sure that his research on the "Breaking the Death Reaper Seal" is going to be a success and so he collected the DNAs already.
The mangapanda translation is a little bit confusing. So have a look at the *********** translation.

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Who knows what else's there in his snake pockets.

 

[edo tensai wilmaso]

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He wants DNA from each of them. I understand Hashirama, but Tobi, Saratobi, and Minato? Why? any ideas?

You must be new or you must be trolling , he brought them back to talk to Sasuke after that they will be rolling fool ya fool lol.
he performed Edo tensei on the 4 ho-ka-ges so that means he has already aquired their DNA , fool ya fool.

 

[Honord Sage]

Wait He already had their DNA for Edo, so why dose He need DNA when He already had it.

 

[AndreJNZ]

OP. Please research more before posting stuff 90% of us already knows. For the resurrection to work one needs the DNA beforehand. :/ FFS!!!
The only way a resurrection won't work is when the Souls are Sealed away, or the DNA is degenerated too much.

 

[GsNp]

This is just a bad translation, if you read the *********** version he says he already has their dna since he's a collector himself.

 

[Imperius]

pretty sure he just wanted to see the reaction of those 4, especially tobirama & hashirama since they have been summoned before

 

[craig2ski]

Maybe he'll now have enough DNA to edo the sage of the six paths???? Probably a bad thought, but just a thought!

 

[Ero sennin jiraiya]

maybe so he can summon them as edos again? You need their DNA for edo tensei