The 2.0 changes are to address fundamental issues underlying '
everything', Many fundamental structures underlying game-calculation result in
highly detrimental lag (or other varieties of weirdness) - This
is particularly ruinous to enjoyable Multiplayer/Server play, whatever the state of the community.
Small things such as
Efficient-Calculations-Of-Many-Kinds, especially during heavy combat;things like
AI decision-trees, with individual ships, and how a group might react to damage (for example) - but also how NPC behavior scales on a strategic level. Let alone the basic grinding-lag that we all know and love about online-SM
Using less blocks
per se was
not (as I understand it) the goal of 2.0 at all.