That is doubtful- the battle system employed in TRPG1 has been scrapped, and the new engine doesn't exactly give much place for things like focus pills to be used in-battle. However, it would be interesting to see them included in the Psy Academy- I guess the pretext for not buying them is that they cannot sell pills to non-members of the Psy Academy, or/and the Hero isn't much keen on pills.
Certainly would be interesting to have a few books in the Psy Academy. And maybe have an easter-egg style learnable attack, if you're of the Light element- say with very high personality you can persudade the shop owner to sell you a very difficult-to-understand book that gives you tips on how to master Shockwave?
It would be nice to get a cameo appearance from Grotius- it is clear from info fonud in TRPG2 that Spriggats live a very long time, like Shadowlings (ie several hundred years, by old forumers' estimation), so he probably is still teaching at the Psy Academy. An illustrative battle would be pretty cool to have: like during open days, when folks show off, say, chemistry experiments, or advanced softaware/robotic research, it can be the same, with Grotius showing the power and use of Cold element, as applied to a battle situation.
The bar, methinks, can surely be a place for many-a-fun NPC dialogue with semi-drunk guards!