This building is indeed thorn stuck deep in Larians side ...
To me it allways seemed like this scene was allways ment for single-time performance ... and yet people keep returning there just to observe something that dont makes sense.
Its true tho, it realy dont ...
Im just not entirely convinced that anyone expected us to come back and withness it.
I mean ... you arive the scene ... there is some time pressure ... you do all you can do withing that imaginatory time limit ...
And thats it, nothing to see there afterwards.

Just as we can ask how is that possible that if we take 30 Long Rests ... those druids are chanting their spell for whole month without eating, sleeping, drinking, or ... well, things that should go in should also go out, if you know what i mean.

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This all seems like purposefull breaking the game, just to complain about the game can be broken ...
Yes, it can ... it allways can ... you managed, clap clap, here is you diplom.
Thats just the thing with games that have open, or semi-open world ... things are allways as they are until player comes, thats how it is and thats how it allways ben ... why?
Bcs its fun!
Its more fun to come "just in time to save people from burning house, or from attack of bloodthirsty Gnolls, or arive just when common folk are arguing with the hag" ...
Would be quite dull if you would tavel through land where Grove would be raided down, zhentarims would be ripped appart, waukeens rest would be burned down, Ethel would be long gone and Marina Brothers would be rotting in the swamp, and goblin camp would be massacred by one really agry bear.

And all that just bcs you took one-more Long Rest than someone in Larian presumed you would need.

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Dont get me wrong here, i would love it if the game would have timed events that would happen simultaneously ...
So one of my characters would help one group, but never managed to reach other in time ...
And another of my characters would go different route and have completely different experience for that reason.
It sounds awesome to me ...
The problem is i cant quite imagine how would they manage to do this (system-wise), without creating other paradoxes.

Therefore its just easier (and most likely even more practical) to see all encounters as separate one-act scenarios, where you were never meaned to return.

The Flaming Fist thank everyone's efforts, and rebuilding begins.
I must say this sentence makes me a little confused. O_o
Puting aside that The Flaming Fist have most likely zero interest in rebuilding anything ... since as far as i know, they are mercenary group that keeps order in Baldur's Gate ... and since there was at least two important Baldur's Gate figures in the rest (Florick and that Grand Duke), they were present most likely as personal guards, rather than anything else. O_o
Im not even sure if there is anyone willing to rebuild something ...
I mean the whole place was raided down ... meaning owner of the inn is either dead, or taken to Moonrise Towers ...
So ... im affraid there wont be any rebuilding any time soon. :-/