Anyway the main difference in opinion...
Dear Forte88,
I will have to disappoint you, opinion can be called OPINION only if it is based on facts and knowledge. So far you did not give one single fact or evidence to support your allegations. Sure, you might wish to see pianists improvising candenzas, etc.--that's your right, however, to say that pianists who don't do it less creative, or accuse entire Russian school of lack of creativity is little... how should I put it?... careless.
I'd suggest you open some books, essays, papers, and start reading and studying. A good start would be R. Taruskin, Defining Russia Musically.
Then in fact, you might discover entire new world of amazing creativity of Russian composers (BTW, many of which were self taught), who invented entire new genres of music; put Russian music apart from Western, created completely new musical language; developed a musical version of orientalism; created new ways of musical development; created new modes and tools to depict incredible imaginaries of Russian life; created new stylizations in which the melody wanders between different tonal centers, creating a very special logic of harmonic progressions.
Russian music is essentially melodic, so if you are sucker for melody, as you say, I'd suggest to start studying operas by Mussorgsky, Tchaikovsky, Borodin, Rimsky Korsakov.
If after all of that you still have any doubts about Russian composers creativity, then study music of Mussorgsky, Arensky, Taneev, Scriabin, Medtner, Stravinsky, Prokofiev, Rachmaninov, Shostakowitch, among others.
While on that you might also want to make some reading about Russian educational system. Read about pedagogical principles of brothers Rubinstein, Safonov, Zverev, Taneev, Siloti, Blumenfeld, Glazunov, Igumnov, Goldenweiser, Feinberg, Neuhaus, Flier, Zak, Oborin, Naumov, Artobolevskaja and other Russian music educators, who throughout the years have defined entire system or Russian pianistic education, so you will have somewhat more enlightened idea about "forcefed" and "disciplined creativity". Some memoires would tremendously help to get the facts straight and "first hand".
After that please come back so we could finally resume and have some intelligent discussion about Russian music and its creativity, instead of you presenting some empty and unsupported allegations, with no any substance or evidence, and which in your mind supposed to be an "opinion".
Best, M