For what little it's worth, I personally don't "dread" the Heller (or Airfix) "ratline loom." I just think it's silly.
The Great Ratline Problem, in my opinion, is mostly a hoax perpetrated by model kit manufacturers. Revell probably started it, with the plastic-coated thread "preformed ratlines" in its 1/192 Constitution back in 1956. since then various companies have come up with all sorts of clever ideas for avoiding the tying of all those little knots - and, I'm afraid, have convinced generations of modelers that they simply don't have the skill to do it to scale. Hokey "ratlines" also are, I think, one of the big reasons why so many self-proclaimed purists turn up their noses at plastic sailing ship models. (And that, in turn, is one of many reasons why that phase of the plastic modeling hobby has never been more popular than it has.)
The truth of the matter is that rigging ratlines to scale (or nearly so) is no more difficult than plenty of other jobs that go into the building of a model. If you can rig a sailing ship model at all, you probably can rig the ratlines - without the help of a jig or any other sort of gadget. We've discussed the subject quite a few times in this Forum over the years. In every single case in which somebody's gotten up the nerve to try it, he's had the same reaction: "Geez, why didn't I do that before? It really isn't hard - and what a difference it makes!"
There are two old, traditional ways to do it. The most realistic, obviously, is to secure the ratlines with individual clove hitches. That takes a fair amount of time - but less than most people seem to think.
The human brain and hand are remarkable contraptions. They have an immense and sophisticated capacity to learn. The learning curve for rigging ratlines is kind of steep, but surprisingly short - if the modeler will just give his/her fingers a chance. My guess is that rigging the first ratline on a mast will take between fifteen minutes and half an hour. By the time you get to the masthead, though, you'll be rigging one every two or three minutes and wondering what all the fuss was about.
Some consideration needs to be given to the model's scale. Generally speaking, the smaller the scale, the more difficult the rigging. I think most modelers who have some experience probably are perfectly capable of rigging ratlines to near-scale (i.e., with clove hitches) on scales from about 1/100 up. On smaller scales than that, it becomes difficult to make the knots tidy enough - and any problems with eyesight get magnified.
I rigged the ratlines on my little model of the frigate Hancock, which is on the scale of 3/32" = 1', with nickel-chromium wire. I don't think I'd want to try that on a smaller scale - and nowadays I'm not sure my 59-year-old eyeballs would be up to the job even on the Hancock''s scale. (I built that model between 1978 and 1984. Here, courtesy of our good Forum friend Michelvrtg, are some pictures: http://www.hmsvictoryscalemodels.be/JohnTilleyHancock/index.html .)
On smaller scales I recommend the old, tried-and-true "needle through the shroud" method. Charge up a fine, sharp needle with the finest thread you can find. Grab the shroud firmly with a pair of tweezers and ram the needle through it. When you've gotten through all the shrouds in the gang, put a tiny drop of white glue on the intersection of the ratline and the last shroud. When the glue is dry (REALLY dry), slice off the excess length of ratline. Done carefully, this trick can produce extremely neat and impressive results.
In either technique there are two important things to do. First - set the shrouds up first, and get them nice and tight. (Forget about trying to rig the ratlines off the model.) Second - give yourself some help with the spacing. I personally use a simple device consisting of an index card with a series of lines, spaced like the ratlines, drawn on it. The card fits inside the shrouds.
If both those techniques prove beyond you for some reason (e.g., arthritis or bad eyesight - with both of which I profoundly sympathize), don't despair. Consider leaving the ratlines off completely. If the rest of the rigging is neatly done the model probably will look fine - and better than one with sloppily-rigged ratlines. (The museum where I used to work had a series of small-scale ship models, whose builder's name I've long since forgotten. Each was mounted in a beautifully made little glass case, with the baseboard in the form of a reproduction map. Those models were very nicely executed, and filled to the brim with that indefinable thing called "atmosphere" or "character." Few, if any, visitors noticed that the models had no ratlines.)
Again - this is a hobby, and how every modeler wants to go about it is that modeler's business (and certainly not mine). But I do urge every ship modeler to at least give rigging ratlines "by hand" a try. My guess is that you'll find it easier than you thought.