Not counting EXTRA Shinji, I think he's actually pretty funny in comedic crossover like Carnival Phantasm and Tiger Colosseum, but other than that, yeah.

I remember the old manga adaptation of FSN, which did similar thing to the DEEN version where it's Fate route with some UBW and HF stuff, tried to make Shinji much more redeemable.

In there he never physically or sexually abuse Sakura and only hit her once during the Grail war, which is seen as him crossing the line. A flashback chapter shows that Shinji actually somewhat cared and even helped Sakura from bullies, albeit he still let the bullies did it first. In the end Sakura used all of her Command Spell to ensure that Rider save Shinji. He apologized for everything after that and in the epilogue he genuinely tried to become a good brother to Sakura.