Change it to a gigabyte on everyone's (not just one) bitcoin core version.
giagabytes.. dont be a loony.. stick to rational and reasonable numbers
the community are saying 8mb are safe.. but compromised to 2mb just to settle the argument december 2015. which the community thought they had settled when core announced segwit mid 2016 and dynamic blocks mid2017..(december consensus roundtable and roadmap)
core have even mid 2016 said 4mb is safe. and cough/facepalm unofficially said they havnt agreed but will do a change to the base block size
but even now refuse to actually raise their base block above 1mb and have no signs of actually doing real base block dynamic sizes beginning at 2mb ...
so everyone is stuck at 1mb fixed base block
With a development teem doing that, no wonder people are giving up on using Bitcoin.
SegWit is merely to reduce transaction fees (apparently it doesn't actually reduce transaction size) so it will probably be useless. If the transaction fee goes down per kilobyte, more people will be paying more per kilobyte. So it may not fix very much (other than making transactions a little cheaper for those who don't want to pay large amounts for them).
I think if they put it up to 2mb that would be more useful. 10mb or 8mb would definitely be a good choice for the next few years (until them blocks become full aswell).