Originally Posted by
PhoenixStudies
During the green mini dress Marvel Girl years, Jean's telepathic feats includes psi-blasting Juggernaut through his helmet hard enough that he thought it was Xavier, reading the minds of the last people who were in a room to discover Havok had been kidnapped, psi-blasting Mesmero, telepathically contacting Beast 3,000 miles away without Cerebro, reading a robot's mind, psi-blasting Hulk and knocking him out, being a psychic funnel for Xavier during the Z'Nox storyline, and accessing a comatose Xavier's mind.
Before she became Phoenix, Jean absorbed flight knowledge from Dr. Corbeau and psi-blasted and knocked out Cyclops.
During the Gold Team years, Jean transferred her mind and tk powers into Emma's body, telepathically shut down MeMe's mind, hit Betsy hard enough to knock her out of the astral plane, and trained Cable in Astral combat against the Phalanx. She suppressed Wolverine's pain after Magneto ripped out his metal.
And she searched the world with her telepathy without cerebro, before she started to manifest the Phoenix raptor again. You can't ignore it just because it was right before she manifested a raptor.
I know you don't count Revolution because of the power switch, but she did have powerful psi-blasts that effected the physical world, created very powerful psychic illusions, used a psychic wave to cause everyone in a building to evacuate, and in Black Sun created psychic tendrils and psi-blasted a bunch of alien/demon creatures. She was also able to suppress or boost other mutant's powers.
Although, Jean began accessing her Phoenix potential in New 120, she didn't use the Phoenix for every feat she did. There were no fire effects when Jean steered 75 people with her mind in Imperial.
Only at the end of her psychic press conference were there some flickers in her hair. Even in New 121, while her hair took the shape of the Phoenix, she didn't manifest a proper phoenix effect.
Her splitting Xavier's consciousness into every mutant mind was impressive even with cerebro and the Phoenix.
Jean may have been accessing her Phoenix potential in New X-Men, but she wasn't reborn as the fully cosmic powered Phoenix until New 148/150. Remember at the start of New 148 she mentions that she could not find the Phoenix anywhere. So she wasn't constantly connected to it throughout New X-Men. She had to die to be fully reborn as Phoenix.