I am still relatively new to this game, however here are my thoughts on your question.  At first, I too,thought it was a bit of a waste how I have 200 blue prints for a mech I don't intend to use.  However, while some BPs, I would agree are less desirable than others depending on your play style.  On occasion, an event may feature a task;  "Rank up or upgrade 3 mechs and/or weapons" for example.  It is likely that you have multiple low level mechs or weapons in which you've collected a number of blue prints for.  These "useless" blue prints can be used to accomplish these tasks without spending a fortune.

So while yes, I for one am much more enthused when I receive a blue print for a Missile Rack 8, as opposed to an rpg 4 at my current level.  The build up of low level weapon blue prints have enabled me to consistently complete events in a cheap and efficient manner.

I don't however have any info on clans, but that would certainly be awesome down the line.  Judging by Plarium's other titles, I would imagine this is a feature they're considering, assuming they find this to be a feature that would add to the game in a positive manner.  I imagine its highly likely, in time, in some form, clans will be present ;)

@DKnuckL   that  is  an  excellent  point  that  I  had  not  considered.    Still  it  would  be  nice  to  have  the  "option"  of  selling  back  unwanted  bps.    It  is  very  easy  to  become  strapped  for  resources  especially  for  the  player  that  does  not  have  monetary  ability  to  buy  what  they  want.    

Thanks for the questions, guys! Currently, we don't plan to add a possibility to trade blueprints or other items in the game. Though it seems interesting at first, this feature might ruin our current in-game balance. Of course, we're not ready to risk it.

But we do plan to introduce clans. We just need some time to understand how to implement them nicely. Stay tuned! 

This was over a year ago...