My opinion.

For distribution?
Leave them out. it keeps the files smaller and they load faster and are more managable.
Secondly, let the end user decide what morphs he/she needs.

He/she has the same options to put them in if needed, or leave them out.

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!