Yes I have...already done so in this thread...
But tbh it doesn't rake a brain surgeon to know that drop shadow looks terrible...
Isn't the drop shadow noted as an issue on the first page?
Whilst the drop shadow isn't inline with the rest of the design. I find it less distracting than the occasional gradients in bars, these seem to break the flat "material design" esq approach and work poorly (as most gradients do) on mobile/various resolutions. Even with these minor visual miscues, on mobile at least, it is an order of magnitude better. On the desktop, whilst I'm still learning some of the new navigation options, text readability/contrast appears improved on average. Considering this is an import from a different and busy forum, those claiming it is trivial are unlikely to have worked in this area imho.