What? How is this unfair? Is it because she’s a woman? If you see it that way you’re kind of being sexist.…
if with stealth and thief she would have managed to become challenger after 20 minutes of hiding all she would had left to do was to run to her exit and glue herself to the wall for 10 seconds; hard? yes. impossible? almost but no. She didn't try or anyway it was not shown so we will never know. Also winning a show called "deadly TAG" with so little running required was already a big enough fighting chance they allowed.
I agree that they could've extended the drama and resolve every conflict more thoroughly. This drama would do…
I guess my pessimistic nature wasn’t satisfied with just those hints, if I am not being shown a good ending I would just assume there is no good ending. Especially since as you said it is a realistic drama and in reality we are all trying but most of us get rewarded with nothing for our efforts, nevertheless the drama has a positive turn and all the plot lines are directed towards a happy ending, it’s a shame for me that we only get to briefly see the main plot line get resolved. As for the romantic part, i know it’s not a romantic drama but just like real life, romance is heavily involved, i just found funny that the two directors shared a “kiss” on screen but the supposed main couple didn’t, i could argue Dongman only has a deep platonic love for Eun A, as a muse for his work and a companion during hard times and struggles. I much preferred the way Gyeong se and Hye Jin relationship was portrayed. Anyway I understand the main focus of the screenwriter was the struggling part, but am i asking to much if i want to see just one more episode of them living happy ever after since you decided to choose that finale? XD Might have been a production issue or a writer’s choice, anyway i still think it’s a good series and my score reflects that, probably the best one i have seen of this genre
K-Drama 
As for the romantic part, i know it’s not a romantic drama but just like real life, romance is heavily involved, i just found funny that the two directors shared a “kiss” on screen but the supposed main couple didn’t, i could argue Dongman only has a deep platonic love for Eun A, as a muse for his work and a companion during hard times and struggles. I much preferred the way Gyeong se and Hye Jin relationship was portrayed.
Anyway I understand the main focus of the screenwriter was the struggling part, but am i asking to much if i want to see just one more episode of them living happy ever after since you decided to choose that finale? XD Might have been a production issue or a writer’s choice, anyway i still think it’s a good series and my score reflects that, probably the best one i have seen of this genre