I would personally first spend money to buy more articulations, and only then follow with improvements (positional changes, dimensions, up/down-bows, etc.), which I agree are also necessary. With libraries globally catering more and more to the current Hollywood scoring simpletonic epic/drone needs, I am not keeping my hopes too high, but more ensemble (if not solo) articulations that have been around for 100 years in symphonic music by composers such as Schoenberg, Bartok, Hindemith, Stravinsky and Varese, let alone Lutoslawski, Boulez, Stockhausen, Xenakis, Penderecki, Crumb, etc., if not Lachenmann, Grisey, Saariaho, Dusapin, etc., I believe are to be expected, if not actually being mandatory arsenal in the virtual compositional domain.
One cannot live on spiccato alone.
Or can he?...