Right, so it isn't about lots of algorithms being prevented, it is actually a pretty reasonable constraint and not a huge deal. If you were worried about cache

Right, so it isn't about lots of algorithms being prevented, it is actually a pretty reasonable constraint and not a huge deal. If you were worried about cache and indirection, the indices could be aligned to the start of a 64 byte or 128 byte boundary, since 64 bytes is the cache line size but (Intel) cpus will load two cache lines at a time. Because of this, loading in your 64 bit/8 byte index should mean that the 120 bytes after it are going to be cached.