by faster I was only saying in comparison to a single/short handed sailor driving a huntabenejennycatawhatnot who has to, after tacking the jib, lock the wheel, go foward, and trim the already luffing mainsheet by bringing the traveleler back to the new windward side, run back to the wheel, correct his course, than go foward again just to fine tune everything. Each time the guy leaves the wheel, invariably the boat wanders off course, either too far down, or pinching up and costing speed. Yes, you could just leave the traveler centered, but the comparatively long mainsheet from the coach roof to the boom will cause the boom to be way too far out. In contrast, my german sheeting setup has a bridal in the shape of inverted v, with the top of the v attached to a double block for the mainsheet. This keeps the boom virtually right on the centerline when sheeted in tight.
Im also the main trimmer for a very competitive j105 so I do get it. My own boat was a catalina for the last several years where I had to run out from behind the wheel to drop the traveler in a puff and raise it after every tack. In my next boat, I was looking for a new, affordable, family cruiser with end boom sheeting. Unfortunately, there aren't any many out there. I believe the manufacturers feel strongly about keeping the cockpit open and free of gear... so bye bye traveler. (and backstay too
Short of a self tacking jib, a german sheeting system like the one on my jenneau makes tacking a piece of cake as the main is always "preset" from one tack to the other. And when you're all by yourself trying to duel it out against a fully crewed boat, simplicity makes for speed.
ETA: I don't believe the trend to ditch the traveler is a cost issue. If it was, they would just add it as one of the myriad of "performance options" available when purchasing.