>>6839431 For what purpose?
Do you have even the slightest concept of how big the galaxy is? Here's a hint: there's an entire series of planets with the suffix Ord attached to their name. That's an abbreviation for Ordinance/Regional Depot, because the sole purpose for these planets back in the day was a resupply station on the way to planets deeper in the Outer Rim.
You read that right, that's an entire category of planets whose purpose can best be summed up as "gas station."
And what's Lothal compared to that? Lothal had two items of interest, both are gone by the time the planet is liberated. All that's left is some strip-mined farmland.
You're not asking the Empire to bombard an enemy stronghold, you're asking them to send FIVE whole star destroyers to blow up Farmer Jim's shack because he inconvenienced the Empire one time. In the middle of a full-scale rebellion, pulling those assets away from a sector where they're actually needed, most likely.
Vader would've choked you out like a bitch for suggesting something so wasteful.