Hoplite units - phalangite or classical?

[athanaric]

Some of these units have useless 2ndary weapons - ie. lethality of their sword is less than their spear, and the attack value of the sword is much lower too...

That's only the case for Thorakitai Hopltai. All others have swords with spear lethality (0.13), except for Mori Gaesum with their Celtic long sword (0.225). None of these are useless. After all, they have to fight on walls sometimes.
Especially the Mori Gaesum and Thorakitai Hoplitai would be seriously nerfed by removing their secondary weapon.

And I'm assuming Thorakitai Hoplitai/heavy hoplite with a sword lethality of .11 should be .13 in the unit cards? Iphikratous Hoplitai/light phalanx has a sword lethality of .13

No.
Iphikratous Hoplitai have a Xiphos of sorts (generic lethality 0.13), while Thorakitai Hoplitai have a Kopis (generic lethality 0.11), which, unlike the spear or the Xiphos, is armour piercing. Not a bad property at all, if you ask me.