I think that's the position most "slow" scripts are: They could have been written faster in the first place, but they weren't intended to be kept for so long and/or that wasn't a priority at all in that moment. And now that people are looking at them again they could be fixed, but there's usually still not enough merits to do so.

I assume something will done at some point, but IMHO it's one of these very nice problems to have, as there is a working version that will only be replaced by something better, and only if it's worth it.