can no longer select our own heirs?

[katank]

Of course you cannot select your own heirs. Bypassing the first born surely will lead to a civil war in every medieval state.

The problem is that the game doesn't consistently choose the first born. In fact, it often chooses the last born. Furthermore, there are already traits like ExHeir which leads to hugely decreased loyalty etc. The player should be able to change heirs at the peril of civil war like the original MTW.