Yea, flycast is indeed much better all in all!
Tested all 6 games I have for Sega Naomi using outputs ("
Manic Panic Ghosts" and "
Mazan - Flash of the Blade" not included)
Some have issues on the output part from in flycast using demuslhooter (DemulshooterX64.exe as it's used with flycast)
which worked in using demul emulator
I made a list of all the games here, hopefully its something that can be fixed as flycast indeed is much better than demul.

Really 2 games thats have real issues
Confidential Mission (confmiss.zip)
Player 2 recoil unresponsive
Death Crimson OX (deathcox.zip)
No output to be hooked, only credits (image)
Lupin The Shooting (lupinsho.zip)
ALL GOOD!
Maze Of Kings (mok.zip)
ALL GOOD!
Ninja Assault (ninjaslt.zip)
Kinda GOOD!
Using P1_
CtmRecoil makes the recoil go off also in demo mode when not in play
Also loosing the feedback in game in some segments, as seen here
and also here
The House Of The Dead 2 (hotd2.zip)
ALL GOOD!