First off, I wanna say I probably trolled way too much on the entirety of the marathon. So much so I got banned twice so uh.. oops...
Anyways, I personally had a lot of fun watching FGM. I don't usually watch speedruns of guy games but there were some runs that were pretty good. So good that it went way under the estimate it had, and that is obviously a problem (And in other situations, the opposite happened)
I can imagine how troublesome it was to find something to entertain more than hundreds of ppl and as TJ said, it's quite tricky to estimate the time you'll be done with a speedrun of a fangame, but still the estimates could've been more accurate and I'm sure that in future events the streamers can be aware that pretty much anything can happen and rank up some experience from this.
And then, the memes. It was expected tbh, after all it's a speedrunning marathon and memes were emphasized by lots of ppl, but if the chat rly had gone past the limit then I'm honestly sorry. But it still was extremely fun.
Fangame blocks... Not too sure if that's a good idea, but I agree with BBF and Arc, there could be a block only for bad fangames and it's an interesting idea to have a block dedicated to most of the other things done in the marathon (Showing fangames like cultured 2, twitch plays guy games, draw my guy etc.)
Overall though, it was a great stream, I wasn't able to see the 2nd day tho but I'm sure it was just as awesome as the 1st. I definetly look forward to more things like this, thanks for the stream TJ, Klazen, Wolsk and everyone else who did the runs.