thats  how i felt about  my 300. the  neck was bearable  but that  over  thick body was  uncomfortable.

and clunky

                  i put min in a dan electro dc  59.  

  as to the new  ones.    well i  think at some  point theres  going to  be people   transplanting  just for the  reasons  you  mentioned. but  at that price   i dont think youll see that soon.

probably  years  up the road  when there  on ebay for resale..

as to line  6 support.  anything  with electronics     ends  up that way for two reasons   .  some  people  dont  garee though.  one    is   it cost   money to stock items that are  outdated .  one  is  wasted  space  and the  other is  inventory tax.  the second  is  people  move  on  it  doesnt pay to stock  these  old  items  for   a couple  of chances  someone  may need  them.  example  of this is    old  radios. my brother  is  into that  he has a very hard time  getting parts . so he  goes  to  flea  markets  and  sales  and  has to  do his own stocking  of  spare parts. 

  if you really  like  your   700   then  i would  suggest the  same to you.   pickups  can still be  gotten from lr baggs  but i think you need  to buy a  set.  as far as the boards  you  will have to check places  like   craisg  list  ebay  etc  to  try to find  them. also keep a  few  backup copys  of  the  software  updated   drivers  or what ever   might be needed  on an external hard drive  or  one  of those    chips everyone  is using these  days  incase  line  6  decides  to delete  all that stuff..

unfortunately  we  live  in a fast paced  society  where  change  is the  order  of the day and  everything  is  throw  away and  not  made to last.  as to the  necks  on the  new  ones  ..well   id  imagine   there  still using bolt  on necks   . if youdecide  to get one  most likely    they are  still using   gibson  and  fender   neck pocket  dimensions    and  this  would  allow  you to get what you want  from   either  one of them or  order a warmouth  neck..