Hi,
Perhaps, the main issue is that there's no global policy over the real names, here. Some are exact and some are in "Latin equivalent", as you put it. I would rather be exact, but I guess this can render the search difficult. Mainly because I believe users will search with Latin equivalent instead of exact strings.
I'll have to think about this.
In the meantime, can you perhaps point me to the most obvious cases ?
Fixing the characters surely wouldn't grossly improve "searchability", but it wouldn't make it worse either, with the gain of having the names properly spelt (they really look odd to a native speaker).
Not sure what the most obvious cases would be as they're all equally obvious to me.

So maybe I'll just provide a representative sample:
Adam Trëdowski - > Adam Trędowski
Paweî Bogdaïski -> Paweł Bogdański
Rafaî Hencel -> Rafał Hencel
Îukasz Siedlecki -> Łukasz Siedlecki
Sîawomir Giergielewicz -> Sławomir Giergielewicz
Damian Bâczek -> Damian Bączek
Michaî Ôlusarczyk -> Michał Ślusarczyk
Piotr Leônikowski -> Piotr Leśnikowski
Rafal Lipiñski -> Rafał Lipiński
(first name latinized)Michaî Kozusznik -> Michał Kożusznik
(last name latinized)Ãukasz Kaluski -> Łukasz Kaluski
(last name probably latinized)Michaî Slusarczyk -> Michał Slusarczyk
(last name most likely latinized)Tomasz Ûoînierzczyk -> Tomasz Żołnierzczyk
(last name most likely misspellt besides wrong chars)