Usually the lack of music, background and other needed pictures, which can only be noticed after closing real BE, since you have to return everything manually after using BE
Button to terminate the engine quickly does make sense, I did add that for my own testing, although it will send you to main screen. This has nothing to do with loosing or winning, I'll try to make sure that it can function anywhere somehow and push.
Btw how to implement results of BE to characters? Like, remaining health and mp.
You have access to teams in the order you've added them to be instance (be.teams field, it's a list) or to team objects you've created.
Not quite. For example, let's say I 'm planning to run a scene when the team finds something in SE (but hasn't returned yet). But turns out SE can't support such stuff, goodbye scene. Well, I dunno if it will be able to support it, it's just an example.
You can just ask about complicated cases like these and than just go on with your quest development, it doesn't prevent your from doing anything.
Another example, let's say I'm planning to make an event where MC has no choice but to run from BE because the enemy is too powerful. But even now BE doesn't support running away, goodbye event.
That is some intense BS right there

One: It's obvious that we can create this action. So it's not that BE doesn't support it, it's that running away isn't coded in yet.
Two: It's not really all that different from getting your party wasted in a none "battle to the death" scenario which should be our default.
Three:
Yet another thing that you that you can plainly ask about.===>>
I'll look into adding a run away sequence as well. For the whole party at first, maybe per character later on, which will prolly require creating a lot of new variables...