Finished reading Fate/hollow ataraxia recently, since it finally came out officially stateside. I think I can best describe it as 'indulgent'. It's a self-proclaimed fan-disc too, so it's on me for not really knowing what I was getting into. I can't say I'm the biggest fan.
80-85% of the VN is about Shirou faffing about with everyone he knows in a time loop, and most of the sequences are either too long or not that strong to begin with. Most of the time there's too much set dressing for scenes you know won't have any consequences rather than just getting to the point (or punch-line). Probably my favorite gag scene was the 'big sister/little sister' drinking party with most of the female cast because nasu largely dispensed with a large setup for every joke and just fired off dialogue that kept the momentum rolling. On the drama side, my favorite scenes were the Caster and Kazuki flashbacks because they revealed a lot about the characters and their relationship to each other and in a creative way (for her, demonstrating her innocence gradually being shorn away, and for him, letting the reader piece together what's even going on). Some stuff went on just way too long - the magic-sucking scene with Caren, Zelretch's treasure chest that spanned a whole time loop, that bath scene with Rider - and many SoL scenes with just nothing to them ('cooking' is the go-to pointer, but there are other troublemakers).
On the main story side, there's indulgent stuff you're not supposed to think that hard about like the exciting battle on the bridge at the halfway point and that's fine - it's clearly a set piece for its own sake - but even the serious stuff tends to fall victim to nasu's contradicting explanations and there's not much of an emotional core to fall back on. For example, Rin explains the time loops to Shirou not as a series of events connected end-to-end, but as a set of timelines occurring somewhat concurrently, letting Shirou observe other Shirou's experiences who are "ahead" of him. Which all flies in the face of the infinite number of monsters spawning at night that are each a direct consequence of the termination of a time loop and of the visceral descriptions of Bazett's resurrections. ... I guess those aren't actually directly contradictory, thinking on it a little more, but I don't understand the point of the overcomplicated explanation from Rin. Anyway, there were parts I enjoyed piecing together but not sure it was worth it.
Having read four type-moon VNs at this point, my power rankings are something like:
1) Witch on the Holy Night
+Rock solid main cast and performances, benefits from a third-person perspective and non-branching presentation making effective use of time skips, fantastic visuals and direction and soundtrack
-Supporting cast is spottier, first half of story is weaker than second half, could have used another editing pass to fix silly typos (I was fine with the prose overall though; some people are not)
2?) Tsukihime Remake (part 1)
+Generally the new stuff that nasu added is very good, Noel in particular is a trainwreck of a human and may be the best (if not my favorite) character in the story, voice performances all-around are solid though, again fantastic visuals and presentation
-Comparatively a lot of the original material and characters aren't as interesting and solutions to modernize problematic plot points are often awkward and lazy, Shiki is the worst type-moon protagonist for not being much beyond either 'plain boy who's often an asshole for no good reason' or 'serial killer who gets sexually aroused at the idea of killin'
3?) Fate/stay night
I'm far enough removed that it's tough for me to comment on, but I want to say it's paced decently well outside of Heaven's Feel which is a mess for a host of reasons. Shirou's a better protag than Shiki but I still might give TsukiRE the heads up on the rest of the cast. On the flip side I think Fate may dripfeed info to the reader better and have more/better(?) climaxes. Obv. looks much worse than the modern type-moon VNs.
4) Fate/hollow ataraxia