your the one arguing in bad faith, they have 10 quarterly updates so they cant do that in 1 year and they dont just go from patch 3.4-4.0. They stated no dates for the other patches apart from getting 3.0 out in december. Chris even says during the presentation in 2016 around the 1hr14 mark that they will be doing patches every 2-3 months so quarterly updates, it would be hard to do 10 quarterly updates in one year.
Many unique assets will be completed for SQ42 at least most of the vanduul and a number of structures, many planets are not populated by a great deal of things, once the cities of the alien races are complete most assets will be freely available to populated outpost anywhere.
Its alpha there will always be some bug, not even games that have been out for years are perfect and can have game breaking bugs. Ive had no issues in the time i have played 3.9.
there has been no delivery dates for SC since very early development, so its your own fault if you put in thousands and then want out many months later, dont put that sort of money into a game unless your 100%.