I consider myself a long time Eldar player, starting with Rogue Trader back in ’88, and really coming to power with my Saim-Hann warhost from 4th edition and beyond.
For much of that time as a player I never gave the Autarch a real look, or perhaps chance as the Eldar were all about the space elf psychic powers. A farseer on a Jetbike with spirit stones and runes of warding and witnessing was THE standard. If you had the points you might take a second farseer on a jetbike or in a wave serpent.
Sometimes Eldrad even made an appearance.
Avatar before Autarch.
Now I would say that changes, and for Eldar, having more options is always a good thing. In 8th I no longer feel like we need our psychic powers to hold our own against Space Marines- I consider much of the Eldar codex in 40K 7th edition to be a mistake by GW- making the space elves waayyy over powered.
In 8th psychic power certainly are strong, and needed, but not a crutch to any of the armies…
…so we can explore other options for the unit slots.
100 points for the Autarch, with wings, fusion pistol, power sword, and the 6″ re-roll bubble.
14″ movement + 6″ bubble + size of most other units like guardians and big aspect warriors units often means in one turn you can buff most units that need a bit more punch to the dice.
Wings means you can also move around the table adding some more assault ability where needed, not against dedicated assault units of course, but dedicated assault units should never be going up against dedicated assault units anyway.
I’m finding the Autarch to be a very adaptable reaction piece to have in the list.