Dear Lasengle, please made this idea real.
First, made Grail Front into legit PVP event with leaderboard. This way you can solve a lot of issues in one swoop; sell more Servants no matter how OOC it is, making ST NPs relevant that surely will pleased the crowd, then "filtered" the game as well as making responsible staffs became even more diligent--because surely everyone will big brain to reach #1 position. Made it the primary source of SQ to made everyone interested.
Second, please expand NP upgrade to NP 10. It pains me to see Airmong video among my YouTube recommendations, just because I wanted to hear Nakamura Yuuichi; man with such groundbreaking achievements is so ... underappreciated. He should be the standard of FGO content in general, don't you feel bad to his dedication all this time? Funding the servers while some of you bragging about F2P status.
Third, please made paid content. I see the news about change of SQ pricing, no one happy about that. I believe it will be much better if you keep SQ prices the same but made people paid for, say: costumes, CC slot; maybe some special paid premium CE, paid 8* EXP ... paid Servant coins sounds like a good idea as well. This way you can make thrilling fight like Cernunnos again exclusive for those who dare; 90++ nodes prove they wanted challenge and love challenge, what's need waiting for?
Besides, it must be difficult calling VAs for "free stuffs" like Valentine and ... costume like Rengoku. Won't cost you money and bring more money instead.