I had 59 rep in my German one (vers. 1.029), max here is 54 or 56 if you don't join the thieves guild.
Further differences:
Many more charms - even gold - dropped in Rivertown
Many more items stuck in wall
less info with ALT, character responds "slower" to mouse, it's trickier to reach dangerous doors (Timmy's parents)
Dorian's cell IS locked and stays locked, no hanging cutscene (Vers. 1.031 in German)
sometimes even 2 spellbooks at a time from Kistandalius, I've maxed out more than in the German version.
Larian armour "forgot" its magical abilites mag. barrier, poison skin and a 3rd one - had to take it off and put it on again several times
Axe of Crusades in German by Patriarch in German (3x), Axe of Maiming in Engl., Crusade by imp chieftain in N part, where you start
Seems more worth it to reload several times for good stuff than in German -I had Monk Leggings every time in German - even 20 reloading didn't give them to me at the Imp Castle
Finnegan has NO lockpicks - a wonderful source in the German version
Mpenzak stays at burned cart when I did it - did not stand before the Ducal Inn
Solved Marcus/Tingalf quest completely (quest log is clean), he's still standing at Ars
Kiya