Don't try to run X on a PowerVR GPU - though perhaps you could run Mir or Wayland and then XMir or XWayland on top.
For running Xorg on a tablet chip, bet on Intel graphics or nvidia graphics, everything else may not work or be a third class citizen. (AMD graphics will do when AMD chips will be found in tablets)

Jump on new ESRs when they are ready. You should be on version 31 instead. In my experience the newer the FF version, the less crashes. Versions 34 and then 35 seem to have fixed stuff, I'm not getting crap like I used to a year ago. It's more likely to pause and "think" for 5 seconds than to crash (on my PC and for now)

Or to get conservative Ubuntu 12.04 LTS is an option (alternate CD or netboot to install without a desktop envionment) ; Mint 13 is the same OS and its XFCE spin is nice.

By not changing the vital subsystems. Mint 17 to 17.1 brings a new font, a slightly newer version of the file manager and window manager and such other little fixes and things. Such updates will be more mandatory looking with LMDE because they're what is in rolling release mostly.

There is a possibility a large moon is necessary for intelligent life, or at the least the strong tides (really huge at the beginning) were helpful in stirring things up for the appearance of dumb life.

So they will make it so your bill is lowered only if you call in. Isn't that nice? lol.

But most monitors are limited to 60Hz, instead of a typical 85Hz for CRT (and 70Hz even in the VGA text mode). That shows even when just scrolling, moving the mouse pointer, and tearing is annoying instead of being a slight distraction. Granted, that's a bit of a nitpick.

Pouring boiling water from the electric kettle into the pan seems useful.
Eventually the pan is old and shitty but so what. Good shit that it becomes old and shitty before I do.

This is an evil ploy to prevent freedom-seeking users from trying Windows 10 alongside Systemd OS.

In my country it's easy to find real juice as something like "100% pure fruit" or "100% pure juice" is written on it and that's legally binding. But don't kid yourself : it's choke full of sugar.
I prefer to eat the actual fruit and drink water. How simpler can it get?

Alright. But Celeron N2820 is 22nm Atom, not Haswell.
Celeron was based on Pentium II , two gens of Pentium III, three gens of Pentium 4, two gens of Core 2 Duo and then three gens of i3/i7 (not the first gen of i7 I believe, so not counted)

I happen to think the performance is adequate but well : instead of bitching about the very low power stuff, why not ignore it? stay on desktop where the Haswell Celeron (G1840) is fucking incredibly fast.

What the hell are you talking about?
The first Atom was very adequate, performance over that of a Pentium III 1GHz was useful (and still is), netbooks were a success because they were real computers (with XP or real linux) as long as you had one with a hard drive, not 4GB flash.
Also not sure what a 3rd gen Celeron is, but a Celeron 1.3GHz based on Pentium III Tualatin has a Passmark of 288 not 5000.

Can't you use the MATE desktop with your RHEL 7 clone? Or use it in with the next distro you'll use. It is fine, really, I have been using it since when I upgraded from Ubuntu 11.04 (Gnome 2 out of the box) to Mint 13. It is strongly maintained and feature complete as ever (only nag is in my recent version it had decimal megabytes and I changed that to binary megabytes with dconf-editor).

My comment had to do with using a distro that tracks Ubuntu LTS and not bothering with ppas, compilations, binary distributions except for a handful of stuff that I think I need.

I miss gaming under Windows 98, when everything just worked.
I don't want anymore to change motherboard, change OS, reconstitute a game library all for the diminishing returns of games looking slightly better and playing the same or worse than 10 years ago.

All the latest version of applications?
For me and people I know, the new versions of Inkscape and LibreOffice (or their point updates) will be in the OS's base packages in late May, 2016. For those who will bother updating the whole OS.