Luke Kenneth Casson Leighton wrote:

> qt5 because it
> so heavy compared to qt3 that i would be deeply concerned about it
> over-burdening these low-power devices (qt3 is extremely
> light-weight), and systemd because of both the resource
> over-utilisation as well as the lack of accountability, security
> risks, design flaws and the many other factors which are well-known
> and do not need to be discussed further.

Since one year I follow SailFish OS, because I am looking forward to replace
my Nokia N9 phone. I think it (Mer) is very good project, especially for
mobile or tablets. Unfortunately I do not have the time to dive deeper into
the project.
I just want to point out that Qt5 is not exactly heavy for such low power
devices, so your statement is not exactly true regarding this. It uses also
systemd for good or for bad. I think the problem with the Qt5 experience
lies with the KDE philosophy.