Sync and integration: SMS, Google Voice and Google Hangouts

So I've been searching the web for a clear explanation but am now more lost than before.

Goal: I would like to have my SMS/MMS synced and backed up across devices (much like iMessage i suppose) - preferably with Hangouts - so that I can reply to a text message from my computer or another device - I would also like to see my Google Voice voicemails in the hangouts app also.

Is this even possible?

I've seen google help docs with instructions on how to integrate Voice with Hangouts but I do not see those settings in my Hangouts app. Am I missing something?
And I recall reading about Hangouts being capable of syncing SMS and MMS messages across devices - not sure if it's a projectFi exclusive feature or what.

Any suggested apps to accomplish my goal if google apps are not the way to go? Please advise. I don't use google voice for free calls or text messaging - it's sole purpose is to keep my voice messages. Nor do I use Hangouts for free calls or free messaging. I'd like to use my carrier service and phone number.

I'm not rooted (anymore, thanks to android pay) so non-root solutions would be most helpful - though root solutions may pull me back to the dark side.

Moto Voice, Action and assist with CyanogenMod 12.1

Hey guys,
After moving from stock to cm there are some features that I missed a bit.

The Moto Voice is one of them:
Yesterday I managed to install the Moto Voice app directly from the Playstore to my Moto X 2014 (xt1092). I tried the same with several devices but none of them can see it on the Playstore.
You might want to see if you're able to download it but there is an issue (as always ^^), the app is installed and running but doesn't react to anything, I'll join some screen shots to let you see that.

As you can see on the screen shots other features like assist or action are working.

There might be some way to fix the problem of Moto Voice, I'll continue to try to find a fix and I'll share with you the progress of the work.

You can also try to find a fix on your way too ;) that would be a big help :)

Hit the thanks button if you would like to see Moto Voice coming to our Moto X running CyanogenMod ;)

Hope I've helped you :)

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