Are there any errors in this debug board schematic?

Question

Electronics

I want to try to debug myself for the G4 series and work with an external ADC at the same time. Stone stm32g474RET6, external ADC ADS1256. I sketched a schematic, but due to the almost lack of experience in this, I have big doubts about the correctness of the circuit. For the most part, body kits are licked from datasheets almost 1 to 1. But I don’t let go of the thought that I didn’t do it right. Therefore, I ask for help in checking it, I think more experienced people will be able to find and advise a lot. Any criticism is welcome.
Schema pdf:
https://disk.yandex.ru/i/xuE481jbrDttrg
Schema for altium:
https://disk.yandex.ru/d/kUiR2WYBL24hvg

In particular, I have doubts about the need for a linear regulator to power the 5V ADC. And QSPI connections for a flash drive, because. According to the datasheet, as I understand it, you must first connect via the usual SPI and already set the desired connection interface in the register. And I don’t know if this will work if you use only QSPI or you need to connect the usual SPI as well.

Answer 1

Solidarity with Alexander Gusev .
As well as:

• I find the garlands of polar capacitors in the reference voltage circuit doubtful. Will they become a source of noise (from leakage currents)?
  
• The MCP1525 is probably not the best choice for a 24-bit ADC. Initial accuracy - okay, calibrate. But 50 ppm / ° C is already 2 bits per degree, if I did not make a mistake in the calculations. I don't see data on noise without downloading DS. But I think they correspond to thermal stability.
  
• "100 ml of haloperidol in the ass" - will calm [almost] any op. But this is simply ugly (D6 - C34..36), and the meaning of the existence of this D6 is lost. ICHSP, in the original debug circuit - the same (U2 and C4 at https://www.ti.com/lit/ug/sbau090e/sbau090e.pdf ).
  
• What is the meaning of R16, R22, R23, R28, R29?

PS

..... if you use only QSPI or you need to connect the same regular SPI.

"Regular" SPI is a subset of QSPI, EMNIP. So, I don't foresee any problems.