For what it's worth I am new to this market, and have been doing as much research as a noob can do before jumping in.
My very high level take was that the solo promos talk the right talk. By nature I like the concept of open source and modularity.
That said it comes with some problems (think iOS versus android or Mac versus pc) when it comes to control over the end to end product. On the flip side outsourcing the optics seems sound as it is hard to be a specialist in quad hardware and software / firmware and video/cameras/lenses.
DJI seem to have solid hardware and gimbles. Their software is good (but needs to keep improving on the user friendly follow-me, precanned short front based on the consumer comments).
It all boiled down to my end comment that I hope Solo is embraced and improved and proven by both the manufacturer and the community. But at this point I have to go with the manufacturer that has some iterative stability (for all the potential known issues) until that happens.
There is potential that in 12/18/24 months when I am ready to buy again that it's a hard decision between two proven and innovative options and I hope that's the case. I can't take that punt on a promise though and I think I'm not alone in that.
Last thought is the niche market. A lot of the people that would be wooed by the marketed features of the solo are further courted by the likes of lily and similar. A colleague is in that boat where he really wants to film his activity rather than pilot so solo might end up being the tablet stuck in the middle of the phone and PC.