My first review of this game was made on Aug 2012 and it's quite stunning seeing how much history I have with this particular game.
My opinion still stands that this scenario, Eternal, and Rubicon surpass the original trilogy. I'd say EVIL and The Gray Incident are on par with the trilogy. Red is really the only one I'd rate below M2/MI. (Not a huge fan of M1 myself, too much Doom.)
Regarding Phoenix, unlike the previous commenter, I find the combat a thrilling experience; it's especially adrenaline-inducing when playing on Total Carnage; the enemies are so aggressive and ruthless, prompting me to strategize to take advantage of their weaknesses.
I find the level design very complicated and interesting. (The complicated level design grew on me over time; I don't need a guide to beat MP anymore.)
Perfect scenario... except for that typo in Tantive IV. Sytemic glitch indeed.
A 35-level single player major conversion.
This scenario is difficult and action-packed; it features a full arsenal of new, powerful weapons, and more threatening enemies than you could ever want.
1.4 has new Lua features like a performance overlay, weapon buffs, a lot of little bug fixes; it also applies ammo capacity limits on Total Carnage. Requires Aleph One 1.5 or newer, probably!