It is a big improvement.
A slight irritation of mine - and it is not exclusive to CS by any means. But surely it would make sense for the default on these booking engines to be 1 Adult travelling, which you can then add or subtract others as you wish. It feels like a bad bit of UI design !
Month view is a total game changer, though again the language is unhelpful "Fully booked in Classic" should surely be accompanied by "Seats Available, Club Available" or indeed "Travel via Edinburgh" on dates where Glasgow is sold out, and vice versa.
To be clear, I think its a BIG improvement, but still not sure why they can't sell Scotrail tickets to boost their sales even more - particularly as capacity is low and often other options will present only a minor inconvenience to the travel - e.g. Dalmuir and the Fort William is full, but plenty on the lowlander a few miles away .... Lots of travellers will click around to discover it, yes, but some won't and reach for another option instead ...