it's true that for certain special days people will save parts of certain skills to use/mix on those days. (eg, nexus removals on reconstruction day, hells yes)
however, considering the huge consumption of items (essences, potions, etc) needed to play this game, very, very few players would be able to save all of the items they wish to mix for no nexus day.
as for it "not" promoting a varied and diverse trading environment, i entirely disagree. not only will the end mixed items be around, the main trading will be of the ingredients for the end item(s). this would create more varied trading, not less. also, i have a feeling that for a good number of players, no nexus day would be used more to try out making something, and not for mass producing an item.
regarding sales and usage of nexus transfer stones, i think most of the el community is 100% behind supporting radu and roja in their endeavors with el. with that being said, nexus transfer stones are 1) new, and 2) not the main source of income for radu. even if the creation of no nexus day did stunt the sales of nexus transfer stones for the short term, in the long run, this could help the playerbase grow by making the game more FUN
i think one thing we all need to remember, at least some of the time, is that el is a *game* and we're meant to have fun playing it.
if so many people hadn't brought this up before in channels in el, and if the players on ch 6 last night didn't seem so excited about the idea, it'd be a different story.
just because some of us have a ridiculous number of nexus' doesn't mean there can't be a day where others can 'try out' different skills in this classless game.
(and yes, i'm one of the players who has a ridiculous number of nexus')
edit: also, please remember most of the playerbase does not have the gold coinage available for transfer stones that some of the people against this #day have. mean that in a nice way