First of, I would like to say that this forum is very interesting - it covers so many different topics.
Personally I do not think that we are practising Dharma when we are selective be it in terms of the work, attitude to others, transformation etc.
Selectivity is only a perception and a limit/barrier in our minds that we have created for ourselves. If we are selective in doing Dharma, does that mean that we help this person but not help another person? No - because it reflects attachment to a certain type or certain person hence biasness which would go against what Dharma teaches which is to be all-encompassing. If we are selective the motivation to begin with would be wrong and it could even create negative karma on our part, as we shun away from responsibilities, liabilities and compassion - so how would we achieve Bodhicitta?