Maass wrote:
 
> What do you believe to be the best method in an IAL:
>         a) to have only one form of the second person pronoun, for the
> singular and for the plural, for example, YOU as in English?
>         b) to have two forms of the second person pronoun, for the
> singular and for the plural respectively, for example, YOU and YOUSE as in
> Newyorkese?
>         c) to have two forms of the second person pronoun, for the
> familiar and for the formal respectively, for example, TU and USTED as in
> Spanish, or TU and VOUS as in French?
>         d) other ideas?
 
You could do it in the weird Lojban manner:
 
do - you, the listener(s)
do'o - you and others.
ko  - you imperative
 
Since Lojban has no singular/plural distinction anywhere in the
language, the
you/youse/y'all distinction can, if necessary, be made with
numbers e.g.
 
redo - the two of you
cido - the three of you
so'odo - several of you
rodo - all of you
 
For example, many postings to the Lojban list start "coi rodo" -
"Hello all".
 
 
If you want something simpler and more SAE, I'd suggest making a
singular/plural distinction but not a formal/informal
distinction.  A pronoun
equivalent to English "one" or German "man" might be useful too.
 
co'o mi'e robin.