3-way merge view feature

I had seen in some other topic discussion that the 3-way merge editor was not taken in scope. Is it still not taken into consideration or can we expect it to be released in near future?

There are no plans for this in the near future.

Are there anything that I miss out if I use 3-way merge available in version 5? Is it still relavant?

Bad mobile support and broken screenreader accessibility, but other than that it might work well enough.