IDK about 100ms being sensible; I have 7ms to frankfurt, 100-110ms to USA servers. I get hit through closed doors, lose peeks all the time (sometimes without even seeing people), get rekt by havoc even though I LoS it super fast... if I play on the 7ms servers... the moment I go on 100ms USA servers I am the one who wins the peek, chases down guys and PKs them through the gap as they close the door... or did they close it from their perspective already? 🙂
Low latency should be something you want; even 40-50ms vs 10ms was a huge deal back in the day. If they do a ping cap, then they should also provide EA vpns, to raise your ping to the exact cap, that way at least we can get an even playing field for all.