My old fav is the STI in NJ/SJ that has FRNOEVO but it is becoming dated now.
My GD is old and worn. It's a sleeper. That's part of its appeal to me. I have considered vanity plates. It's only telltale is lack of rumble and I don't want to add another.
Otherwise I'd apply for BLT-BTR
Another that fits is KLR-BEE but we all know that's generically taken in our world and it would just feel like a copy or advertisement, It's certainly the first thing that come to most passengers mind regardless of their knowledge of after market Subaru products though.
Recently I considered RSPNSIV after a Phillipino co-worker used that term as soon as we started rolling