Unity should let the users decide where they they want to put the Launcher: left, right, top or bottom. It's very weird that it doesn't have that option in 21st century (just left and bottom of the screen positions). Probably it be implemented in the centuries to come: 22nd century - Unity Launcher top; 23rd century - Unity Launcher right.
All is a matter of view, some say it's pointless to change because e.g. they working with shortcuts, some say it's necessary to get the ability and other say it's waste of resource because we have other problems. Sometimes things get's also a little bit over-hyped, compared to Windows which almost get's hyped at each new insider-build even only 2 or 3 'changes' was made. But I can fully understand what people saying, it was/is a 'must' more or less and the Ubuntu tweak tool (as mentioned in my added video) get's also soon support for it. I hope you like it, I like this change it's not really an 'important' one but I bumped because I saw a lot of people asking me and others for this little future.
It took, what eight years to respond to users' complaints about Unity? I've never liked the look of the launcher, and it still doesn't look right to me. It seems like an oversized taskbar now. I'll stick with Mint.
What's the big deal here? Hide the unity launcher, install and run Cairo Dock at start-up, and you have a much nicer task bar on the bottom of your screen. I have been doing this for years, almost forgot the existence of Unity launcher.
The "big deal" is the lack of choice. IMHO, Unity is crap, but still, one should have a choice where to put the launcher once one wants to use Unity. It's all about choice...