they do value the criticism but they have way more experience developing video games than anyone on this forum so they know what they should or should not do and a lot of the time people are asking for impossible stuff
i find that questionable logic at best and just downright insulting to the modders out there who have done things that put bethesda to shame. they have dramatically improved the AI, made better quests, frankly made very good worlds (nehrim anyone) better followers, better locations such as ivellon dungeon and the gates to aasgard mod. it confuses me because fallout 3 had very good writing and then we see this........stuff in skyrim which isnt even close. it's like they fired all the good writers and kept the mediocre ones.
as far as listening to complaint you bet they do. they changed level scaling based on negative feedback from oblivion, they made unique dungeosn based on negative feedback from oblivion. they changed TES formerly boring magic system to something like bioshocks and dark messiahs which was well recieved and as other people have mentioned they put carriages in for the no map travellers like myself out there.
the reason that TES is so special is because they are the only developer out there of their size that makes this type of game. two worlds 2 is a very good game considering it came from a very small publisher. obsidian did a much better fallout than bethesda did with the exception of fallout 3 having a better gameworld design. i have a feeling that if some other major developer started making an open world sandbox game that TES would start to lose its luster.......there just isnt any competition for them since everyone is making shooters or racing games.
all my criticisms aside skyrim is a HUGE improvemnt over oblivion and even beats out morrowind because of the vast improvement in combat. hopefully mods will sort the shortcomings out.