There is one thing you can do with ship engines over than storing them, build a complex of power stations in a hideout with some free space. This is a good way to stash them until your time of need when you're done researching better planes, it'll break even after a few months
I already do that and you only get 8 Bases dude. I usually do it with my 8th base. Fact is its already filled up, so I wish there was something else to do with them.
Problem: Baby Nukes are awesome, but lack a good delivery mechanism.
Baby Nukes used to be launched by RPGs.
What really needs to happen on an engine level is 2 or 3 Tiered explosive damage radius reduction.
So it can do incredible damage up close up to like 8 tiles, but reduce quickly. Then the reduction is lessened out to 16 tiles, then lessened even more out to the full radius. For example:
20 per tile out to X tile value.
15 per tile out to Y tile value.
Normal out to Z tile value.
Could be used for Grenades which do alot of damage up front but then do pretty flat damage out to a wide radius. Such as this for a Frag Grenade
69, 59, 49, 39, 36, 33, 30, 27, 24, 21, 18
stout damage in the first 4 tiles but then basically 1 bullet worth of damage all the way out to 10 tiles