As an Explorer, I see no need to change the mechanics here.
I've been out, far away from inhabited space, for - uh, I can't even remember - probably a month now if not more.
I've travelled to the Great Annihilator, to Sagittarius A*, and I've discovered, scanned and recorded numerous Earth-likes, Neutron stars, Black holes, White Dwarfs, and seen some wonderful sights.
It's been quite a journey for me and my ship Iron Man.
I have been filling my data banks with good data which hopefully will net me a nice financial reward.
I have invested my valuable playing time and you could say my emotions into exploring the galaxy.
I'm still about 21,000 LY from Sol, but I'm on a course back towards inhabited space now, because I've grown tired and weary, and also have heard tell of some major changes in technology under way that could affect me if I've not returned home before they are revealed [my way of saying 1.3 is imminent].
Being out so far away, I run the risk of accidentally blowing up my ship. My data should go with it if that's the case - I'll return home alive though, and I shall think about getting Out There again, maybe repeat my last failed journey with more experience.
Also, even returning home has its dangers in this cut-throat universe - I am in danger of the hives of villainy and scum that are some inhabited systems - it's a risk I need to take to get home.
tl;dr : the danger of data loss is part of the gameplay mechanics of ED. Removing that danger makes the journey meaningless.