Well astronomically, yes, it seems pretty clear Sins does not have a consistent scale. However, increasing the size of the planets, and thus gravity wells, reduces game performance. However, I highly recommend the Infinite Space mod if you want planets that look as magnificent as they should be. How, this, like a few other mods that try and deal with the scale issue, do so my making the ships smaller, not the planets bigger, which some people may not like.

[Tutorial] Placing Mods

honestly a realistic scale would render the game unplayable.

Either ships would be essentially microscopic, or gravity wells would be so large it would take utterly unreasonable times to traverse.  In the proper scale individual planets would likely be larger then entire 30+ planet solar systems are now.

Increasing the size of the planets by a factor of 2-3 won't make it anymore realistics, so why not just accept it as a necessary consequence of good gameplay and move on?

It's not just a matter of trversal time but also a matter of space to manage.  Actually finding the attacking enemy fleet would be a timeconsuming if even feasible endeavor on any realistic scale.  STatic defenses would become even worse due to the increased scale of a gravity well.

not to mention to actually move between a galaxy view and a scale where you can actually manage combat players would have to do entirely too much camera work.

The game just wouldn't flow as well as it does now.  When it comes down to it, realism is all good and fine, but generally isn't advisable when it comes at the expense of gameplay.

at 7DS we have larger planets, grav wells and jump distances/galaxy scale

It just feels a heck of alot better and also means we can have absolutely massive titan-like ships that look right in scale to the regular ships.

Sure it still isn't exact true to life scale, but it looks good.

Some of the problems mentioned here are quite serious and valid. I think perhaps Sins II should have larger scale planets. If the devs can figure out how to keep the gameplay from falling into any of the abovementioned pitfalls that would be great. Now, planets should look better in Sins II, the surface and atmosphere should look better, and that might be more important that scale considerations.

Sins looks great as it is, and I hope the next iterations step it up to the next level!