Regarding a second account; I'm afraid there's very little that can be done on that front, there was account linking added some time ago that meant you didn't need to maintain or continually log-in to uplay, you just create a linked account and forget about it- no second password needed I believe.
So at least for usability it should not be any different than normal.
If you have other specific complaints about uPlay then I'd be happy to hear them and feed them back to the team, since we're actually located in the same studio.
Unfortunately uPlay does drive a significant amount of business value, handling things like entitlements so that each game doesn't have to re-implement them and allowing us to handle things like distribution of "other" types of clients, like development versions of the games for review, or debug enabled versions of games for debugging. It also allows for A/B testing of various features.
As recently as 2017 there was consensus among ubisoft upper management that the perception of uPlay was bad, so more focus has been put on the user aspects, so in theory it should be much better now than it was, because before it was very business focused.
But, as everything, people are happy to help if they can, nobody wants to make an awful system.
Unless the problem is that you have to have a second launcher? that's usually peoples primary complaint. (and in those cases uPlay tries to hide itself and stay out of the way)