It was interesting to hear your recollection of Boilerplate's (whose handle I don't really recognize) custom character. Of course, the question "best Daggerfall build" for what? is going to come up. To me the best character is the type you have most fun playing. So I'm assuming that this is a power play type character. Under that assumption there are a lot of things that could be done to improve it.
This has been discussed a lot, and I think the information at tesguides.com and uesp.net is comprehensive. The attributes are good, but the skills and advantages/disadvantages could be changed a lot to the player's advantage even without using bugs (such as the High Elf paralysis or the immunity to magic bugs).
Medical is really an unnecessary skill. Having a lot of HP, high Endurance or the special advantage Rapid Healing in Darkness are much better.
Boilerplate was a decently famous youtuber, and had the most famous Daggerfall video's. He took his channel down, though.
Haha, and I said it was arguable, but it's the best build I've ever used, and this guy did know what he was doing. I'm not really here to argue the how good the build is, but rather a re-post of it.
But even so, I was just posting what he had. My character is a Nord, with small variations to the build more personalized to me.