The driver is a very nice Christmas gift, thank you, guys.

These settings make the Dell stick somehow Thinkpad feel:
# https://www.x.org/wiki/Development/Documentation/PointerAcceleration/
xinput --set-prop "AlpsPS/2 ALPS DualPoint Stick" "Device Accel Profile" 2
xinput --set-prop "AlpsPS/2 ALPS DualPoint Stick" "Device Accel Velocity 
Scaling" 3
xinput --set-prop "AlpsPS/2 ALPS DualPoint Stick" "Device Accel Constant 
Deceleration" 7
xinput --set-prop "AlpsPS/2 ALPS DualPoint Stick" "Device Accel Adaptive 
Deceleration" 7

You can play with these values and if we agree on some values, they
should be set by default, because the default setting makes the stick
really unusable.

Also, I didn't find how to slow down the mid-button scrolling speed :(

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https://bugs.launchpad.net/bugs/1590590

Title:
  Touchpad not recognized on Dell Latitude E7470 Ultrabook

Status in linux package in Ubuntu:
  Triaged
Status in xserver-xorg-input-synaptics package in Ubuntu:
  Confirmed

Bug description:
  Expected: Touchpad settings available in Mouse & Touchpad Settings
  dialog

  Actual result: Touchpad settings missing entirely

  
  Details:
  The touchpad on my Dell Ultrabook (Latitude E7470) functions mostly. 

  The settings for the touchpad are not available at all in the Mouse
  and Touchpad settings (see http://i.imgur.com/YRGiOrj.png).

  Two-finger scrolling works as expected except it's using "Natural
  Scrolling" by default and there is no way to change it.

  xinput list does not display a touchpad at all:

  ⎡ Virtual core pointer                        id=2    [master pointer  (3)]
  ⎜   ↳ Virtual core XTEST pointer                      id=4    [slave  pointer 
 (2)]
  ⎜   ↳ ELAN Touchscreen                                id=11   [slave  pointer 
 (2)]
  ⎜   ↳ ImPS/2 Generic Wheel Mouse                      id=13   [slave  pointer 
 (2)]
  ⎣ Virtual core keyboard                       id=3    [master keyboard (2)]
      ↳ Virtual core XTEST keyboard                     id=5    [slave  
keyboard (3)]
      ↳ Power Button                                    id=6    [slave  
keyboard (3)]
      ↳ Video Bus                                       id=7    [slave  
keyboard (3)]
      ↳ Power Button                                    id=8    [slave  
keyboard (3)]
      ↳ Sleep Button                                    id=9    [slave  
keyboard (3)]
      ↳ Integrated_Webcam_FHD                           id=10   [slave  
keyboard (3)]
      ↳ AT Translated Set 2 keyboard                    id=12   [slave  
keyboard (3)]
      ↳ Dell WMI hotkeys                                id=14   [slave  
keyboard (3)]
      ↳ DELL Wireless hotkeys                           id=15   [slave  
keyboard (3)]

  
  /proc/bus/input/devices lists the device as a "Generic Wheel Mouse"

  Output of `lsb_release -rd`:
  Description:  Ubuntu 16.04 LTS
  Release:      16.04

  xserver-xorg-input-synaptics version information:
  xserver-xorg-input-synaptics:
    Installed: 1.8.2-1ubuntu3
    Candidate: 1.8.2-1ubuntu3
    Version table:
   *** 1.8.2-1ubuntu3 500
          500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
          100 /var/lib/dpkg/status

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