Hello Tomas,
successfully done some test flights with this little 'bitchy' bird (Logo 400SE, it has alway been bitchy;)) on Spirit 2... and i have to say: whatever others have noticed as a 'huge' difference, i can not. with the settings you recommended for vbar users, the little bird felt very familiar from the first flight. not exactly like neo before, but i just needed some minutes to adapt to the feeling and i am very happy with the result already after 3 flights with a little bit of tuning. extremely helpful the possibility to use sliders etc on my iX12 directly attached to parameters to tune Spirit setting parameters.
for other (bigger) birds or new ones i still would love to have 1. Esc PWM% mapped to output channel - it is my main drive train tuning parameter and 2. SRXL2 receivers either with SRXL2 sats or 'old' dsmx sats directly attached to Spirit... as Rx voltage is missing with spm4649t and i am still seeing some frame losses... so i am happy to have the additional directly attached sat. anyhow would prefer spm4651t plus sat (but directly on Spirit unit)... maybe 3.1?
i really love the great level of integration w/ Spektrum... as said before. the programming via Tx & texgen is a pearl... even it is working perfectly i am not using the android app on iX12 anymore. no real need for it for tuning only.