Ok, let me state this:
The Crawler is imo not really modern voiced, compared to the Holy Diver. It's to my ears a sort of uber-PAF, which has medium-output, but I guess people think it's actually hotter because of it's huge soundspectrum. What I like about the Crawler that it's reacts very well to the volumeknob and has also very appealing cleans. On every of my amp the Crawler performs very good with strongs mids, thick solonotes and growling when pushed.
Also the splits are very pleasing. Some people say it doesn't cut enough, but you have to set it to the right height and it really cuts well thanks to the AV-magnet. Yes, compared to a Mule it's more compressed, but it still has a lot of dynamics and good pickattack. Fusion, blues, pop, rock or hardrock, some metal, the Crawler delivers on all of my amps. A singing PAF on steroids that is not fatigueing in any way. The pickup has been my workhorse for many years and it's a keeper.
As Slarti and I mentioned, the Abraxas is more or less of a crossover between the Mule and the Crawler. Different magnet than the Crawler though: AIV vs AV.
The Abraxas is in this respect more related to the Mule: yet more bass, mids, less highs, a little more compressed than a Mule. You can see the Crawler as a thicker and a tad more powerful version of the slightly more open Abraxas.
For the neck I would definitely skip the Crawler-neck and look at something like the Abraxas- or Diver-neck. Or even the Emerald-neck might do.