Mordin vs Padok and Legion vs Legion 2.0

I recently replayed the trilogy (renegade + almost everyone dies during the suicide mission), and I noticed one thing.

Obviously, having Mordin and Legion alive in ME3 is better from an "emontional" point of view. Their death scenes are more cinematic and well-written. But they somwhow lack narrative coherence: I've always thought that compared to ME2, they werea little bit inconsistent. Surprisingly, I've noticed that Padok and Legion 2.0 are somehow better, from this prospective.

Mordin/Padok

Very simple. During ME2 he strongly believe that genophagy is a good thing, the best solution, and that krogan are very dangerorus on the long term. He killed Maleon, and he believes that his data should be destroyed. He pitied the krogans, yes, but he showed very little remorse and even less "rational" doubts.

But during ME3, he has become the greatest supporter of the cure. Ok, the reapers are everywhere, krogan can be good allies, wrex is a capable leader etc... but also during the events of ME2 Wrex is the leader and the reapers are very very close (and he knew it!). The situation is pretty much the same...

I wouldn't say that this sudden change of mind is a plot hole, but it's a little bit unrealistic/unlikely.

A new character, Padok Wiks, (with different motivations, a different background and a radically different philosophical view), makes more sense.

Legion/Legion 2.0

I've noticed that  in ME3 Legion (both versions, original and fake) is a lying, manipulative slicker. The original Legion is almost as manipulative as the the fake one.

He uses Shepard in order to free a bunch of geth and to obtain the reapers code. He never informs Shepard about his intentions or goals. He secretly does what he wants, and than he said to Shepard: ehy, that's it. Deal with it. You need me. Finally, if you can't choose the peace option, he said "kill the quarian, and I'll give you the upgraded geth fleet"

He exploits you, he gains power and assets behid your back, and finally he put itself in a good barganing position. His actions are like a risky "rise to power", a littlefinger/varys thing.

I understand and respect his motivations: geth are almost fuc*ed (the alternative is being destroyed by the quarians or enslaved and later destroyed by the reapers), and Legion want to free them, and give them a real consciousness. Helping Shepard is the only way.

But what about the lying, manipulative part? It makes sense only with the fake Legion: he doesn't know Shepard, he doesn't trust organics etc. He's nobody's friend. So he lies to them.

But what about the original Legion? The loyal Legion? The Legion that used to make such intelligent and intersting speeches about organics? Why shouldn't he trust -at least - Shepard? Doesn't he understand that lying to a friend and an ally can be counterproductive?

So, imo a manipualtive Legion 2.0 makes more sense than a manipulative, loyal original Legion...

Let's be clear: not a plot hole, nothing so bad, just a little more narrative consistent.

What do you think?