i think western Muslim immigrants and their kids should all go back to where they came from. even the local converts should migrate to Muslim countries. not easy, i know. it's only an opinion and a wish.
in Muslim countries (or india as an exception) the awam doesn't have any connection problems with the ulema. i mean they know the language, dialect culture, slang etc etc. the awam only faces one problem, of locating knowledgeable scholars who truly give knowledge its due. (in the case of india, hikmah in dealing with hindus is also required)
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in the west you have three simultaneous problems,
locating knowledgeable scholars who actually use that knowledge well in Allah's cause,
locating those with HIKMAH who can walk the fine line between upholding and propagating Islam without kissing up and diplomatically coexisting peacefully in society without coming across as either kiss ups or terrorism supporters,
connecting with the youth in terms of local language, culture, dialect etc rather than imports
and unless all three qualities are simultaneously found in the same individual, the western Muslim congregation WILL suffer.
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sure, back home too people have started to get infatuated by english speaking Molvis who use powerpoint presentations rather than the old school Urdu-speaking types (sadly a market demand tahir caters to), but still both the awam can come across the good scholars, and they too can still get their message across to the awam