Em10 ND filters and Bracketing questions?

Can anyone recommend any quick fitting ND filters for the EM10, just run into my first issues as I didn't realise the shutter speed only went up to 1/4000 and shooting outside in the sun wide open at f1.8 needs a faster shutter? I wonder why Olly only made the EM10 go up to 1/4000 instead of 1/8000 like the EM1 and EP5? Especially considering its main rival, the GX7, goes up to 1/8000.

Whilst I'm asking questions, is there a way you can create a short cut to bracketing rather than going through the very long winded menu system, like adding it to the super control panel? I can set it to a myset and then allocate this to one of the functions on the control dial that I don't use, such as iAuto, but it seems a bit odd Olly haven't included this on the super control panel to me  

 

Thanks for the replies. I didn't realise that about the shutter assembly, guess that would bump the price up a bit then.