Yes, No. 7 is very difficult to play, as the pianist has no place to hide where the writing is so sparse. I think you take the last chord in its own pedal, which I do too, while holding the tie from the previous measure. Somehow the last chord does seems more pure that way, rather than thinking that because the harmonies are the same, one continuous pedal will suffice.
I was actually referring to No. 7 of the Scriabin
But yes, Chopin 7 is an entirely different type of difficulty: despite its apparent simplicity, it may be among the most difficult pieces to interpret IMO. I agree with your comments about pedalling. Given that Chopin was writing for earlier instruments, I think this is what makes pedalling in Chopin difficult on the modern piano. One has to constantly use one's ear to hear the proper nuances. If the pedal were held through the final A chord, it would become too muddy to my ears, and I'm glad you think so too.
I think your renditions are very fine and certainly effective, and I enjoyed hearing them.
Thanks for that. Regarding No. 9, sometimes I suppose it just depends on my mood.
I try to be spontaneous, and I might play it differently tomorrow