Unless you posess the ability to travel through time, your comments are
totally useless.
F21 is still supported if you prefer Plasma 4
for how long - 4/5 months? *laughable*
KDE upstream should have learned from the KDE4 fuckup which took *years* to get useable again and not break user setups again and again while wonder for decades why the majority of users out there donät siwtch to a Linux desktop
a good upgrade is completly *invisible* for existing users independet how large are the changes on lower levels - that said from a developer who satisfies his users by *not* change their expirience permenently