Does anyone have an Idea why the system tries so hard not to deploy them? What would the opposite case be? Would a wing with all the panels up suffer structural overload apart from probably losing 80-90% lift?
The system tries so hard to not deploy GS until it KNOWS you are on the ground and attempting to stop (which is what all the logic looking for TL position and wheel spinup and WoW squat switches and the like is for) because the consequence of uncommanded GS (and FS on ground) deployment is potentially catastrophic.
If the GS were to, for some bizarre reason, deploy during TO (because the logic were set so as to 'ignore' TL position, say) then you'd be in serious trouble above V1 on a limiting runway.
And if they were to deploy early they would, as you suggest, destroy the vast bulk of the aircraft lift. landing gear are generally stressed to 10ft/sec impact velocity. In close to freefall (which is what 80-90% lift loss would imply) you'd get 10ft/sec if dropped from about 2ft! From, say, 10ft, you'd be so far above design loads for gear and supporting structure that the aircraft would be very, very, seriously damaged. Possible to write-off levels. Plus the attendant pax injuries, and if the wing tanks breach .....
Yet we need GS deployment to be prompt and reliable to get decent landing distances, especially on wet/slippery runways. So it's a fine balancing act to design a system which is ready to act on a hair trigger, but 'never' to act when it shouldn't. Hence the complex logic used for GS deployment (on all a/c, not just AB)