i don't know if you'd like this idea...

yeah, sometimes it's difficult to make repetitive pieces interesting.
but besides exhausting all the coloring possibilities, articulations, etc..
try to play it in a straighforward manner, almost strictly baroque. then suddenly, in a beautiful passage somewhere, you can play it emotionally/romantic, making that moment a place to really express yourself. of course, you would still like to do it "in context" (can't explain). sometimes, it may not suit some pieces, but just try to find that spot/passage, anyway.

people will be shocked of the eccentricity, at the same time they might like it because it's beautifully being human, they will remember that part because you caught them off-guarded, then they will conclude your performance not to be boring.

SOMETIMES, it can be boring to be too intellectual... BUT ONLY SOMETIMES because i honestly prefer to base my interpretations on my reasoning/knowledge, musical or non-musical. so showing some obvious traits of being a human pianist can be refreshing. i feel like we're trying to get rid of our being humans and try to perfect every performance. but actually, it's quite interesting to hear our excesses (like being too emotional), once in a while that is.
maybe that's why i love the old school pianists, e.g. rubinstein, cortot, etc. Ivan Moravec for me is just a perfected version of them all (in my opinion).

try it.. take the risk.
