This is a current patch demonstration of what TaLaR is talking about.
WARNING: This video contains ships not optimized for their role. You have been warned.
I tried spinning. It wasn't much of a trick, but maybe it's better outside of time dilation?
I love phase ships, I almost exclusively fly phase ships as my flagship. Naturally, I love [REDACTED PHASE SHIP]. I'll fly non-phase ships regularly too to mix it up, but not with as much gusto. The AI doesn't attack on oblique angles to bypass shields like I did, but it doesn't really matter. I'm pretty sure the AI being slow on the draw for raising shields is intentional? Lets you do stuff like that, anyway. Fun is good. Really satisfying to clip a frigate's wings like that.
The enemy AI's handling of phase ships is borderline suicidal in most cases. They really need to hang out near friendly ships and attack when an opportunity presents itself, not become cut off and run down. There are serious limitations to what it can do, and operate alone is not one of those things. I love going deep into the enemy's flank or rear to blow stuff up, but the battle ends faster when I start slashing apart the enemy on the front for my allies. If the AI for phase ships does anything, it should do that.
You can see a ... slight improvement in allied phase ship AI by setting them to defend a ship, but they will absolutely not use their cloak well when equipped with something like Phase Anchor, and rarely/never choose to back off and vent. They love to eat PD fire and fail regularly to use dumb fire torpedoes.
The AI needs 10-15 seconds of time set to be aggressive, where it uses cloak to blink in and out (with an emphasis on cloaked), and then return to a nearby friendly position and recharge weapons, flux 0, etc. The AI will almost always blunder badly with phase ships if they have free reign to attack. If the AI hid behind nearby allies as a rule when it wasn't on a short attack run, it would probably do a lot better. The phase frigates in particular, but the Doom is probably the best non-[REDACTED] phase ship to have on a beefy battle line in general. Even *while* on an attack run, it should hang around allies.
In terms of phase ships and handling, for me:
Afflictor: Best phase frigate for players, like everyone says, great foundation. If the AI hung back and focused its system on targets under heavy allied fire, it could be trouble. Obviously fantastic in a strike role. My favorite ship right after early game.
Shade: Best phase frigate for AI. The EMP Emitter is wonderfully versatile. If the AI used it aggressively while escorting (flanking around attackers) or defensively in the case of fighter and missile attack, it would shine.
Gremlin: This will never be good. It doesn't need to be good. But in a player's hands, it has about 30 seconds of glory in early game fights with SO, UI, and torpedoes. I didn't use it for long, but it honestly wasn't THAT bad for a quick play in a small skirmish before I brought in another ship. Disclaimer: I always choose random start, and ended up with one. I would never buy one on purpose. After the first wave of bounties, it was immediately scrapped.
Harbinger: It's in a weird place right now. If the Quantum Disrupter generated a small percentage of temporary flux, it might just be perfect. The system would function normally when the target isn't near maxed out on flux, but it could push a target with high flux over the edge into an *actual* overload. Real assassin material if it had a medium universal slot.
Doom: It's fine now. It can't just sail across the entire line of battle carelessly anymore, but that's a good thing. Really brutal in a fleet supporting role, way better than a Shade. Again, AI defensive, so on.
Spoiler
Ziggurat: Almost totally unstoppable, it's so deliciously good. You can cloak, you have a flexible array of weapons, and you have FRIENDS! I use this *almost* exclusively after I salvage it, d-mods and all. With Phase Anchor you can level truly awesome firepower. For me, best flag capital in the game. The only problem I have with it is that it doesn't appeal to me aesthetically. Naturally, I would never allow the AI to pilot my murderchild. That would be a colossal waste. Goes surprisingly well with neural link and another capital (like an Onslaught) when you need to do battle with Geometry.
EDIT: Didn't really talk at all about my overall feelings on the 'State of Phase'. I think it's in a good spot, judging by the sample of comments in this thread (for players, specifically).
I think the Phase Dive effect from Phase Anchor should probably be a ship system for a new phase ship. Some kind of midline-style design, where it's just totally CR crippled instead of destroyed, and there's no limit to the number of ships that can Dive. I could absolutely see the Persean League fielding a phase ship like that in the face of a Hegemony invasion. Phase Anchor doesn't need it, it's plain good even without it.