P: Ability to sync Lightroom Classic keywords with the Lightroom Ecosystem

You are 100% correct. The lack of keywords means nothing has been solved for me. Yet. The mobile app is literally a couple of weeks old. What I’m banking on is future improvements. I could hope for the same from Lightroom, but they’ve had plenty of time to do that and have made their intentions pretty clear - no sort of merger between Classic and Cloud. Also, just to be clear, ON 360 supports tags and everything else. If you’re using two computers to look at synced files the experience is identical on both computers. It’s just the mobile app that can’t see or edit tags. I’m really hoping (and expecting) that will change in the coming months. 

(And, yes, they're actually called "keywords" in ON1. I guess I interchange those terms without noticing.)

Keep us posted as On1 moves ahead. 

However, if your purpose of moving to On1 was that keywords don't sync between Adobe's desktop and cloud apps, and On1 doesn't allow you to add tags (which I assume are keywords) at all, I'm not sure what you've gained?

That is, sadly, exactly what needs to happen. I’ll probably to the same when my subscription comes to an end. I’m afraid it won’t change a thing as the market of smartphone users is probably still growing, but still.
Thanks for the feedback, I’m sure many people are interested in switching experiences.
Cheers!

Just pulled the trigger - Adobe is no longer getting my monthly subscription. That lack of $9.99 monthly revenue will surely bring them to their knees! Sigh, well, I can dream. Anyway, I've moved on to ON1 RAW with the 360 cloud service. The desktop software is quite nice (I'm not missing anything from Lightroom yet), but the mobile software (which JUST launched) I'll charitably call "a work in progress". You can see all of your synced photos which sync with a smaller, compressed version. The smaller files plus a minimum storage of 200Gb means I was able to comfortably sync all my photos. But that's the end of the good news for the mobile app - you can't add tags (!) and the albums (ON1's version of collections) can't be nested (as they can in the desktop software). The GOOD news as the company is clearly very active in rolling out improvements. I decided to give them my money to continue encouraging those improvements since Adobe clearly has no intention of doing so.

That doesn't help you much because on all of the alternatives you lose the very functionality completely that you want Adobe to improve (it is there to begin with)... The DAM functionality in all alternatives is miles behind Adobe - thus therein lies the problem, until a serious competitor with cloud integration shows up there is no immediate incentive to improve.

I for one am starting to look into other photo management software such as Capture One.  I believe that if enough of us starting to consider alternatives and started migrating our images over, then would Adobe start to listen.  Currently they do not feel there is any incentive to do so nor really care to.  This is evident in the manner in which they are silent on the topic and all the responses we are seeing are from other disgruntled users.  Food For Thought.

Just adding my voice to the chorus of complaints. The lack of keyword sync is closing in on deal-breaker status for me. I guess Adobe is feeling confident LR is still the best right now, but ignoring straight-forward feature requests from a crowd of paying customers seems like a bad business plan to me.

I just can't comprehend why they wouldn't implement the sync, I can't imagine what other features it would conflict with.

I can't believe Adobe did not think about that. This is very annoying. Lightroom CC is very useful, but without keyword synchronization, and without colors added to the photos, it's a nightmare when I am looking for a photo from my phone, when I don't have access to Lightroom classic.