With all respect, I think you should either stop offering large bundles, or improve your backend server so it can handle large libraries.
When I order a game from any other gaming site, the game appears in my library. If I have a large library, this makes it easier to install games on-the-fly. In contrast, when I buy a bundle from Itch, I essentially have to visit a library within a library, just to see it in my library. I hope you can see how user unfriendly this is. I wouldn't be complaining if this was a temporary measure, or part of a larger roadmap- even if it was years in the future, or an indefinite "to-do". But outright saying you will not be adding this is pretty frustrating.
I've just started getting into Itch, and I thought buying this bundle- as well as supporting Ukraine- would bolster my library and encourage me to buy from and support more indie devs. But this is something that will be a real sticking point against me buying any bundles in the future. I like to know exactly what I own and have it searchable from a single place, not stuck between multiple purchase pages.
I appreciate having been able to support events in Ukraine in this way, but it has left a bit of a sour taste in my mouth.