Personal langs and converse of aux

hello all,
  first off to introduce myself, I'm Brian, live in DC, am a medic and
 a student.
  I am rather new to the "secret vice" and I look forward to being able to
toss questions out on the list and hopefully get some ideas and guidance
 from those that have been playing this wonderful game for some time.
  My primary interest in conlangs is in artlangs.  I am working on Esperanto
but mainly as a means of teaching myself applied linguistics before I start in on
the construction of
a conlang of my own.
  The natural langauges I am most interested in are variants of English (my
native tongue), Mandarin, and sign/ASL. The conlangs I find most interesting are
Esperanto, Loglan(et
al), and Laaden.
  I will call the conlang I am envisioning the "PPC" or personally perfect
conlang. (stress on the "personally"!!)
  The PPC has two purposes..1.) It's a personal or journal language suitable
to expressing my own (somewhat odd)worldview, and 2.)it's designed to be an
excellent "first" language for my kids.
  Lots of the IALs tend to stress similarity to natlangs as positive
features for a given tongue.
  The PPC to me would be a "anti-IAL" in that it would have similarities to
natlangs, but it's designed not to be easy for native speakers of those
languages to learn, but rather to include most or many of the common
features of as many languages as possible so that the kids are familar with
them.  This way they won't be in the position of an English speaker trying
to master use of tones found in the Asian langs when they try to learn a new language.
 The PPC would also be an "anti-IAL" in that it would (likely) be the exclusive tongue 
of a family group (not even a micro-community!).  It could thus be super-specialized in
ways no widely spoken language could afford to be.
  Would someone care to suggest a top ten list of features found most
everywhere that are very difficult to master
if they aren't found in one of your native languages?  I will be asking the
list questions about phoneme selection and phonology in the future. :)
  How would a conlang such as I am theorizing be categorized? Is this a
"philosophical" one..or just "other"?
  Similarly I would include Sign/gestural components into the PPC,
infant-signing/gesture being one of those things that fascinate me, and it
would prep them for mastering ASL.  I would try to include as many
"developmentally-enriching" traits as possible.  Has anyone else thought
about this sort of thing?
 


I will shut up now..but suggestions are welcome.
Brian
deepbluehalo@earthlink.net