@projectmoon
The main problem that currently prevents using Wayland for electron apps, is that the On-Screen-Keyboard cannot work with GTK+Wayland+Mir1.x . By the way the Merezhyvo Browser ( popriatary app ! ) is an electron app using Wayland, but it has found it's way around this problem by coding it's own OSK inside the app itself, which is not really a way I want to go. (Especially for Signal because I want to modify the code only as strictly necessary, and also because for Signal there are other problems when it comes to using it in Wayland mode with Mir1.x).
Anyway I've already tried it (see in the Signal UT topic), and reallu the best is to wait for Mir2.x, I hope it won't be in too long.