In the beginning of the remix, I thought I was hearing Top Gear, and then it instantly transitioned to epic mash of Touhou and Tower of Heaven! Been listening to your tracks and they're all so nice!
Oh, apparently I've been here once already. Either way, actually this time I went through most of your content, keep it up, you are improving, so keep on improving and make it even better. I do not know what makes you think incredibly though.
Sakuya the most iconic? I think that probably belongs to Flandre and Reimu. Cirno nowadays is also surpassing in popularity, despite the fumos starting with inu sakuya. Not too certain whether Reisen would be more widespread as well, but Momiji is probably more popular (without anyone realizing it). Then there also is Yuuka, who is definitely more popular. Popular in the sense of being widespread. In the case of Sakuya, only her Flowering Nights theme keeps making appearances everywhere, similar to Flandre's. also Cheeeen and Suika. And Okuu for some reason. Sakuya probably competes with Kaguya and Eirin in this regard.