Thanks for the feedback Boskonay.
Myles, if pressure is to be applied, a viable plan should be fully laid out prior to any formal advocacy. One thing I see as key is due diligence done to understand what are the political, legalistic, elf and safety and parochial roadblocks that have lead to the current stalemate so as to counteract them.
As I suggested, 400 square foot of municipal space, secure, cctv'd, all items behind glass
Probably integrated within an existing museum or library space Temple Bar Ark, Collins Barracks, National museum. See this search link for the range of municipal buildings available.
http://www.visitdublin.com/See_and_Do/tours_attractions/Museums_and_Galleries_in_Dublin
Or an ante room in one of the transport hubs, Heuston Station, Busaras basement
Do you make it free or charged which would require staff (another roadblock)
An understanding that this is an interim / complementary measure until the working version is up.
Personally I think Malahide is a non starter. When I visited in 2010 I was amazed at just how long it took to get there from the city centre, even with a car and with all the motorway structure in place, it is 10 miles. Take the train and you still have a 30 minute walk to the Castle.
It would get a lot more footfall and exposure in the city centre.
Just my thoughts.
Exposure via Facebook, Twitter petition, Causes.com (integrates with Facebook, allows seamless send on)
Oh, and yes, I'd like to help.