Congrats to RAP. Neighborhoods like R-A are why I have NEVER understood the attitude to copy South Florida, that is so prevalent. Miami/FTL do not and will not ever have a Riverside-Avondale.
Riverside Avondale emerged relatively slowly and by and large earlier than much of Miami which was litterally being created from scratch out of beach sand and swamp during roughly the same era.
My native North Miami was built for The Greatest Generation post WW11 expansion .......The Greatest Generation eventually fled due to seismic demographic shift.In this regard Miami was decades ahead of Jacksonville.
There is in fact a vestige of RAP type in Miami's Coconut Grove.The Grove adjoins Biscayne Bay- a setting worth noting because apparently adjacent water body is key to this particular place type.(And a key reason these neighborhoods can not be easily and effectively repeated).
Riverside Avondale is more reflective of New England or the midwest.
South Florida has generated many really cool enclaves reflective of...well, singular south Florida.
Fort Lauderdale/Broward County evolved in a similar role as Clay County to Duval would later.
Many newcomers to Jacksonville pass over RA in favor of places such as Ponte Vedra.
There are many- for some tastes too many similarities with evil south Florida in our region.What I see is we don't proclaim copy of Miami so much as sell against it.Like Clay & St.Johns with Duval.
Caution against comparing any sacred community with a perceived or bonafide lower common denominator.
Many "Best" places take strident efforts to remain under the radar so to speak.