There already is a “low cost” desktop metal 3D printing technique via sintering, you can buy filaments with 90%> copper and a sintering forge while expensive is can still be done on a relatively small budget <$2000.
Yes there is shrinking that needs to be adjusted for but that can more easily be done in software.
Electroplating requires a clean environment, high voltage and usually rather odd and sometimes nasty chemicals.
FDM metal printing on the other hand can be done on a $200 printer just as well as on a $3000 FDM one.
Beyond that it would be interesting to see what SLA can offer since there are already ceramic resins that need to be sintered and I don’t see a reason why metal resins can’t be also fabricated in the same manner.
I don’t see powder deposition laser sintering becoming a consumer product either but there are already desktop printers that do that too they are just rather expensive.