What would you like improved on tonebase?

Marcia Richards It can be helpful to see their fingerings and technique. I have done courses where they don't really say which fingering they use for something and never show, either. 

Maria yes exactly . I also look for the choreography - the maestros have specific gestures to produce a very wide variety of sound. For example in producing a pianissimo sound you often see the shoulder moves up along with the wrist and then the finger barely touches the key to produce the said effect. An even more important aspect to watch for is the precise fingering used for different types of hands e.g those with very large small hands should find a great maestro with a similar hand structure and see how they play very difficult pieces . e.g Chopin Etudes or Listz etudes . 
I have requested fingerings on all courses for intermediate level and higher. It is strange that TB has so many scores without any markings ! But there is a wonderful track of Chopin C# minor I  have been following where the very great Maestro Yuliana Avdeeva explains the piece and Dominic shows how to practice this in small stages. It is absolutely superb ! 

Peter William Fingerings are often more necessary for intermediate and below. 

Maria 

for fingerings-  what I typically do is to play the 4 octave scale for the piece in consideration e.g A maj or D maj. for Mozart K 414 - one of my practice learning pieces..for the scale runs in the piece the fingerings mostly align well.. It is a lot more difficult with Chopin to align fingerings especially with playing chords and transitioning.. This is why having multiple fingerings is useful as the hand structure will vary a lot. What I do is go to IMSLP and check multiple editions.. there is also the Henle App which will let you choose multiple masters fingerings.. I used this for another trial piece -which is really too difficult for me to play yet. Beethoven's Piano Sonata 7 - there I found Schnabel's fingering which seemed to be at least doable. So choose fingerings that match your hand is the best strategy - not the best version that you like.. :-) as it may be Horrowitz - span size is probably a 14th.. I am sure most people won't have such a hand structure.. mine spans only an octave comfortably.

Peter Golemme Mine is still there, though I have had times when it has disappeared, too. I wonder if it's one of those wonderful electronic gremlins.