Two things addressed in v0.9.9, just shipped.
Bulk-buy research. The BUY MODE bar (×1 / ×10 / ×100 / ×1000 / MAX) at the top of the factory now applies to research too — same way it applies to machines and supports. Tap a research node with MAX selected, you'll buy as many levels as you can afford in one click. Shift+click for ×10, Shift+Alt for ×100, Ctrl+Shift for ×1000 also work. The arm/confirm safety prompt is skipped when you're in a bulk mode (you've already deliberately opted into it). Plain ×1 still asks for confirm to prevent misclicks.
Eight higher-tier achievements added. The existing list capped out at things like "1B ore lifetime" and "1000 machines" — those were rushable, fair point. New ones push an order of magnitude up: 1T ore, 1M prototypes, 2500 machines, 250 prestiges, 50 publishes, 1000 patents, 25 Legacy Marks, and a "single run 4 hours" entry. Total goes from 71 to 79.
If you'd already earned the PERFECTIONIST capstone, it'll un-light until you reach the new milestones — that's intentional. The capstone is "earn every other achievement," so it has to move with the list when content gets added.
True auto-buy for research (toggle, priority queue, set-and-forget) is still in the v1.0 queue. Bulk-buy via the mode bar covers most of "make it go faster" without having to design the priority logic, but if it doesn't go far enough I'd love to know.