Just browsed through
https://pointieststick.com/ and there are some very cool features coming in Plasma 5.18.
GTK apps will now be configured to automatically follow KDE theme settings. Yay! This was sometimes a real PITA.
Multiple terminals open in one Konsole window a la tmux.
System Tray applet for controlling the Night color feature. This looks like it can natively replace Redshift which I currently use.
Rename files from the context menu in the open/save dialogs. Nice. I believe this is an old lost feature now returning.
Now if only Elisa would implement ReplayGain I could be tempted to use it as no.1 music player. It's shaping up very nicely otherwise.
Plasma 5.18 has just been released as beta and hopefully it appears in Sid quickly. It is the new LTS release.
https://kde.org/announcements/plasma-5.17.90.php