@fschmitz422 I agree with you that the new analysis feature still needs work. I posted my concerns specifically about its accuracy and what I have found, in another forum post here:
https://www.chess.com/forum/view/site-feedback/new-analysis-feature-is-not-accurate-enough
Have a read and comment in that post if you can, so that we build a forum post with a number of user's feedback and concerns.
For me, the new analysis board is quite an disappointment. The main issuses are ...
1.) The precalculated lines ("xxx is good") are simply wrong, most likely because the engine is not given enough time for precalculation. I've already seens tons of examples where the on-the-fly-calculated lines (with increased time limit) straightforward contradicted the precalculated lines, even cases where moves that according to the on-the-fly calculation were optimal, were considered to be an inaccuracy according to the (precalculated) analysis.
2.) To make things worse, you cannot longer choose the increase the time invested (like with the "deep analysis" button in the previous version). Now, it's just _always_ wrong, or at least untrustworthy .
3.) And to make things even worse: As opposed to the untrustworthy precalculated lines, you cannot pick an (full) on-the-fly-calculated line, but have to pick those move-by-move (which means that with every move the complete line has to be calculated anew, which is really annoying)
4.) The whole things has grown much too fat, with the consequence that even on my quite decent desktop computer, the move animations are everything but smooth. The pieces stumble across the board with varying speed, and sound and animations are completely out of sync. And turning the animations off will affect other areas (like live chess) as well (where the animations are smooth even on my somewhat outdated notebook)
5.) The option to disable the best move display does not make the nasty arrows disappear from the board (On TheServerYouShallNotName you can really switch them off at least). Together with the new icons and symbols for the move classification ("book", "good" etc.), the whole board display is quite confusing.
6.) When it comes to "performance summary", like presumably many if not most users, I'd like to know exactly two things: The percentage of strongs moves (book+best+excellent), and the percentage of weak moves (inacc.+mistake+blunder). Instead, I'm given some mysterious "Accuracy" value, but this one for every piece type (which I considered to be an interesting idea at first, but has turned out to be pointless: At least in my games there seems to be absolutely no correlation between piece type and move accuracy)
7.) There are numerous more issuses (like why on earth is the graphical evaluation display always cropped at +/-5, when for the vast majority of the users it is NOT irrelevant if the evaluation is +5.1 or +12.4, or since when do we implement charts with vertical and horizontal scrollbars that hide each other, not to mention that they are dispensable in the first place, and where are the labels and values for the time chart, ...), but this post has already grown way too long.
Being in the software business myself, I know how hard it is to design and implement online applications (with real-time components, multiple platforms, heavy load, localization, ...), and to keep them halfway bug-free, and all-over-all chess.com is imho doing quite a good job (excellent even: the new lessons format). But the new analysis board seriously still needs some revision.