Seeking feedback on house rules

[Segovax]

This Tuesday I am having a group get together forna session 0 for the Dead Suns AP and I had a couple of house rules I was considering implementing, talked it over with my players and there were no objections, so I was looking to get some feedback here on the boards.

1) All ammunition will keep their standard pricing, and have the option to have it's capacity restored to full by paying 10% of it's modified price.
So for example, a container of adamantine alloy arrows could be replenished by spending 102 credits or a container of illuminating small arms rounds could be replenished for 10 credits.

2) Like ammunition, grenades can have their capacity refreshed by spending 10% of the item's modified price. So for example a frag grenade 1 could be replenished by spending 4 credits or a glamered shock grenade 1 made to look like a personal comm unit could be replenished by spending 19 credits.

3) Weapons and armor can be upgraded to higher level versions of the same item by spending the difference between the modified item price. So for example, a azimuth laser pistol could be upgraded to a corona laser pistol by spending 3920 credits or a called tactical starknife could be upgraded to a called sintered starknife by spending 11,880 credits.

If anyone has any thought, questions, comments, or concerns I would enjoy having them.

[Metaphysician]

I doubt any of these changes are going to seriously misbalance anything, since they mostly boil down to the equivalent of "modestly more generous wealth supply". I note "modestly" because the big potential change, the upgrade rule, is limited to upgrading within narrowly defined types, at least as far as you describe. As long as this is the case, it shouldn't be too much a problem.

Now, if you allowed any-to-any upgrades, *then* you'd have problems, since you'd have players regularly upgrading gear from Level X to Level X+1, and saving a *lot* more money as a result.