Paths of Buddhism & Possibility of Compassion I have read about different types of paths for spiritual aspirants. Namely:


  
  Śrāvakayāna
  Pratyekabuddhayāna
  Bodhisattvayāna
  


Of the first, Asanga states their faculties are limited:


  "These people are described as having weak faculties [...]"


Of the second, he states they have medium faculties:


  "[T]hey are said to have medium faculties [...]"


Finally, he describes the bodhisattva as with sharp faculties. In the Sutra on the Ten Levels, it says the sravaka will have practised: 


  [...] through fear of cyclic existence and without [great] compassion, [...]




I know that this is mainly a Mahayanist view. Nevertheless, my questions are :

(1) Should I conclude from this that faculties can really be different between practitioners? That, some individuals have greater facility for the dharma, and that enlightenment is not always feasible in one lifetime?

(2) Does this imply that following a Buddhist path doesn't always result in great compassion? Can one follow a Buddhist path while neglecting compassion, and end up lacking it in the end? Or, can compassion always be developed, even  at some later point?
I always feel guilty giving interpretative answers with no references, but since that's exactly what you seem to be asking here, here we go.

Sure, there are people of different skills and capacities. I wouldn't blame it on them, it's just a matter of circumstances, previous lives karma, old ignorance, we all were ignorant at some point.

But yeah, as my teacher explained, there are people who get it immediately, people who never seem to get it and just keep worshiping it as religion, and most of us in between, who get it with enough instructions and practice. As Buddha said, it is for this category that we teach.

Enlightenment is feasible in one lifetime if one makes it a priority and stays honest with oneself. I can't say some people are hopeless, that would not be fair. But yeah, for some it's more difficult, because of conceptual stereotypes, karmic inertia, or emotional blockages.

Traditionally, it is said that Buddhist path does not always result in awakening of compassion. Traditionally, you can be an isolated Buddha, who just can't stand the pain of engaging, and keeps to the peaceful abiding at all times.

However in practice, I just don't see how someone who really gets it can help but develop grand,  immense compassion for all sentient beings. So if you ask me, I'd say, if you're honest with yourself, compassion always arises. But then again, I'm a Mahayana guy, maybe it's my bias, maybe I should learn to feel less pity for everyone :))