Autonoms are so awesome. Most T4 units don't work that well unsupported, but network controllers are the whole package. Their summons are decent by themselves ( low level autonoms ) but once their summons get level 3 networking and shield projection even the weakest becomes a strong unit by itself* - and they are just the throw-away screening chaff that you use to soak attacks while the network controllers melt-down stuff at range 11 with artillery-level particle beams. They are high-health, armored, floating, unflankable, evasive, ignore terrain, are aoe-healed by monitors and can equip 2 armor + 20% regeneration mods.
Speaking of the autonom self repair mod - it stacks with phoenix walker regeneration, which leads to massively armored aoe melee beaters that regenerate 40% of their life per turn ;p
I thought they were pretty bad at first glance compared to the psi-fish or paragons, but wow was I wrong.
* Autonom sentinels are pretty shit, but with network3 they buff the entire army's accuracy and overwatch at huge range in a 360 circle.