NW"climber" please stop making uninformed statements.
1) You don't learn for just beginner routes. You learn for all routes. Going onto a glacier where you start by handicapping yourself to only VERY small crevasses is in my opinion very naive and stupid. Namely one has to worry about white outs and getting off course. Using your super short rope on a standard route in perfect weather is fine, but as soon as somoene gets off route, happens all the time, then your super short rope just became a gigantic detriment.
Making pickets is easy. Sorry if you are ignorant. Those who wish to be informed can easily find the information and yes, save $50 because they aren't made from money. Read how much weight an actual picket can endure in snow, even HARD snow. Its VERY low. IIRC its at best around 700lbs at which point the snow starts to creep. If its ice, then you won't have a picket in to start with, you will use a snow bollard or ice screw. Added on top of that is if you are pulling more than 700lbs, you just ripped your climber in the crevasse in half. Do you propose killing climbers as you "rescue" them? I don't. A #10 bolt could easily hold that, of course it has 0 holding power in snow. You are blathering your ignorance for all to hear whining about a 2" angle 1/8" thick with 50X the section modulus? REALLY? Do, keep informing the masses about your brilliance. Even if you drilled 1" holes in it it would be fine. The average person can MAYBE get their hands on a 1/2" drill bit. Drilling their holes down the center. Sigh.
Look back at my posts and my qualifiers for glissading with crampons. No, you don't always do it and as I inferred, if anyone bothered to contemplate what I wrote before doing the standard knee jerk internet reply, is that if you have crampons on YOU SHOULD NOT BE EVEN CONTEMPLATING GLISSADING as the conditions warrant the wearing of crampons in the first place! Means if you do glissade, you probably won't stop which means you are nothing but a rock hurtling down the hill. IE you better be going slow. What everyone else didn't bother to post for glissading is never glissade where you can't see the bottom and this makes no difference if your head is "up" another 3 inches because your feet are on the ice and if its steep and suncupped you are still likely to go flying head over heals when your heel catches without crampons on. I have done so and seen others do so when doing sitting glissades WITHOUT crampons on. Never Glissade on Glaciers either irrespective if you are wearing crampons or not.
You are assuming a 3 person rope team, when reality states that usually it will be 2 person rope team as that is the most efficient climbing accumen. 3 and 4 is nice, but rarely or never happens except on boring volcanoes that a few folks slog up. Most routes on NW volcanoes don't even really require crevasse rescue gear unless you are heading up the more technical N face routes.
Besides, 30m rope, ends have 3 meters on them 30m-6m = 24m left putting your 12m between ppl. 1 guy falls in crevasse, assume 2 guys out of crevasse, leaves 12-15m to make a C/Z system. You don't have enough to simply throw a drop loop and haul the guy out in the fastest most efficient manner. Or drop loop on a 2:1 system as the guy in the hole is usually plenty fine, but just in an awkward spot. Making a 6:1 with 40 feet of rope makes for VERY short pulley system = TONS of resets = TONS of time = guy in hole is frozen stiff along with the guys topside = if any injuries DID occur, means the guy in the hole is well into shock by that time as the retards up top to save 1lb of rope are resetting the prussic minding pulley for the 100th time to get another foot of rope up and out of the hole with hopefully an alive person on the other end. If you are actually climbing with the want to repel anything significant you probably have a 50m long rope or at a minimum two 30m halves.
Regarding reaction time. I see you can't read qualifiers after your initial knee jerk reactions. Your knee jerks, and your brain turns off it seems. I see you haven't been on many ridges where you decide which side to jump, or simulclimbing long stretches where if given a tad more time the rear guy can stuff his ice axe in and dig in with their feet/body where if you are on a super short rope, you are lucky just to get your axe in at all. The super tame glaciers of Washington/Oregon/WY don't count as glaciers either with their 1 foot wide "crevasses". Other than a few on the bigger volcanoes, there are a whopping 5 mountains or so with 'real' glaciers outside of them. Even then you have to work to find said glaciers.
BC/Alberta/Alaska/NZ/Chile/Argentina all have real glaciers along with Europe another GIANT easily accessable climbing destination. Who in their right mind wouldn't want to climb in Europe or Peru or you name it. Why handicap yourself with insufficient gear unless you have infinite money. I know very few actual climbers who have that kind of $$$.