The good aligned liches are from FR and from a 3.0 publication, IIRC, that's where the problem comes from, but I like the 3.0 undead alignments better, anyways.
Invisibility is ok. I like it better at 10 min/level, but it is not useless, just more limited (no scouting around in the outpost, just passing a few guards with one casting). And the effect is incredibly powerful at 3rd level.
Bull's Strength, Cat's Grace, Bear's Endurance, Fox's Cunning, Owl's Wisdom and Eagle's Splendour all seem to be underpowered because of duration.
Invisibility, Fly and Polymorph, while certainly not underpowered per se, I like with a higher duration to add some decent out of combat versatility.
Summon Monster I is really, really bad. They should have a minimum duration of 3 or 5 rounds or something like that for the Summon line.
Bye
Thanee