This does feel then like a matter of taste. While Pascal's predecessor language Algol did allow syntax like that, adding it back to Pascal-like languages would make it into a different kind of language.
declare
function f (i: Integer) returns Integer is ( i * 2 );
x : Integer;
begin
x := f(21);
end;I'm not against evolution, especially when you have others to test the feature extensively for years. But I'm not a language designer and my opinion on the matter holds no weight.