If a TAS on this game is to have any purpose whatsoever, it's pretty much required to manipulate luck to the fullest in the D and Final stages, as A/B/C/E stages are completely deterministic and even the unassisted records treat them as practically turn-based puzzles from which they're easy to analyze.
I'd assume that by now, the records for every luck-based stage can only be set with the most favorable 0.1% of random seeds, if not less. The fact that the final stage here takes four times as long as the unassisted record, and in fact ranks behind
all but two of the submissions on Cyberscore, is a fundamentally disqualifying flaw. It's not particularly fast, nor does it offset that with any kind of style points.
Now, in the previous discussion topic (see the link to unassisted records in a prior post), it was found that the RNG manipulation available in this game is minimal, and consists exclusively of waiting and brute-force restarts. This seems to imply, if anything, that the game makes a poor candidate for TASing, at least for a single-segment stage challenge run (and the other modes aren't going to be any better). Either that, or the run needs to focus on cracking the RNG directly, as has been the focus of many RPG titles recently.