Request: Unit type choice of Infantry, Ground, Aerospace, and Space Ship on units cache?

[binaryspica]

Environment

Ver 0.47.6

Description

For now, on units cache we can check All, Mek, Tank, BA, Naval... so on. But isn't it better to have a way to sort by the unit's supposed battlefield as well?

For example, adding these options on Unit Type of cache;
-Infantry: Combine of Conventional Infantry and Battle Armor
-Ground: Combine of Mech, Combat Vehicle(both Tank and VTOL), and Protomech
-Aerospace: Combine of Conventional Fighter and Aerospace Fighter
-Interplanetary Aerospace: Combine of Small Craft and Dropship
-Interstellar Aerospace: Combine of Jumpship and Warship

Naval has its own classify already, and Support Vehicle include various type of motive type so it is not eligible to add either of them.

It would be better if we can pick more than one at the same time. For example, if someone wants to make a ground force the person will check both Infantry and Ground, and if someone wants to make a space fleet the person will check Aerospace, Interplanetary Aerospace and Interstellar Aerospace. And for someone who wants a marine task force, combine of Naval, Aerospace, Infantry, and Ground will be suit.

It is not always good to see various units at once, but at least you will need a list of units eligible for your battlefield. It will covers what 'All' can't cover