I believe at some point the level stabiliser was changed so only (level)bombers could employ it.
This makes sense. However, some aircraft like the Bf-110, Do-335, Ar-234 and others(He-111?) had an actual built-in autopilot.
CoD for example simulates the single axis autopilot in the Bf-110.
Are there any plans to introduce similar functionality to il2?
I know it can be done via devicelink, as demonstrated by FS~Daedalus' excellent
C-1 Autopilot for the B24, but some form of in game implementation would make things much simpler and better integrated.
Even if it's greatly simplified, it would add real world functionality to these planes while still requiring proper engine(and in case of single axis, trim) management rather than having the AI fly your plane entirely.