There's significant function overlap with the existing support company designer, and various unique designers. I'd suggest removing convoy/transport plane/truck/train/support equipment from it, and adding specialised branches for each type of industrial/engineering research instead. Probably would need low bonuses to maintain balance/pacing, as well as a decrease to the effects of the main branch - this is probably necessary anyway, you can easily get ~50% increased research speed for industry/engineering as a minor within a year. Love the idea, and it's a solid implementation though.

There were mainly two reasons I added bonuses to "transportation" and support equipment:

* Make the MIO show up ingame in the first place If you dont provide any equipment categories, it wont show up on the listing. Maybe if you remove the filter, but that seemed too confusing.
* Actually give the MIO some content outside of research. As far as I know MIOs can only give specific bonuses to equipment, while research is an all-or-nothing setting.
* Not every nation has a support equipment designer.

I do agree that the stacking research bonus may stack a bit too quickly though, given how industry heavy research in the early game is.

>Make the MIO show up ingame in the first place If you dont provide any equipment categories, it wont show up on the listing.
Ahh okay, I've only played around with existing MIOs, so I didn't know that. Maybe just tone down the buffs then? My main issue is that it essentially makes the unique parts of certain countries' MIOs worthless, which also slightly changes the balancing between countries.

I might have a play around with balancing and non-production bonuses later for my own interest/use in my own mods, want me to let you know if I find anything potentially useful?

Sure. I'm also still trying to find out why it doesnt show up in conversion mods such as Kaiserredux, Kaiserreich or Equestria at War. But does show up with R56.

Notably it also starts showing up on hot reload. Currently I suspect that its a bug in the mod loading.

Okay, it's too clunky for what I had in mind, but you can set events to trigger from within the MIO file, using:
on_design_team_assigned_to_tech = {
on_design_team_assigned_to_variant = {
on_industrial_manufacturer_assigned = {
on_industrial_manufacturer_unassigned = {
on_tech_research_cancelled = {
on_tech_research_completed = {
This could be useful, but for example you couldn't get buffs to specific construction speeds when researching a relevant technology without making separate MIOs for each research category. You could have one for fuel research/ event for fuel infrastructure/transport production etc..but I suspect that would end up being too much visually and clicks wise.

I make a cn translate

--------------
l_simp_chinese:
INDUSTRIAL_ORG_LIST_WINDOW_FILTER_CATEGORY_INDUSTRY: "工业"
-------------------
l_simp_chinese：
cic_organization: "支持工业研究所"
cic_organization_trait_initial: "支持工业"

cic_eq_group_supply：“供应设备（$motorized_equipment$、$convoy_1$、$cic_eq_group_trains$、$transport_plane_equipment$）”
cic_eq_group_trains: "所有列车"

cic_mio_loc_header_funding_research: "资助与研究"
cic_mio_loc_header_product: "设备及生产"

cic_organization_trait_gain_1: "营业部门 I"
cic_organization_trait_gain_2: "营业部门二"
cic_organization_trait_gain_3: "营业部门III"
cic_organization_trait_gain_4: "营业部门 IV"
cic_organization_trait_gain_5: "营业部门V"
cic_organization_trait_research_1: "研究团队 I"
cic_organization_trait_research_2: "研究团队 II"
cic_organization_trait_research_3: "研究团队 III"
cic_organization_trait_research_4: "研究团队 IV"
cic_organization_trait_research_5: "研究团队 V"

cic_organization_trait_product_initial_land: "陆军部门"
cic_organization_trait_product_initial_plane: "空军部门"
cic_organization_trait_product_initial_convoy: "海军部门"

cic_organization_trait_product_land_truck_product: "$motorized_equipment$ 生产"
cic_organization_trait_product_land_truck_defend: "$motorized_equipment$ 防护"
cic_organization_trait_product_land_truck_efficient: "$motorized_equipment$ 效率"

cic_organization_trait_product_air_product: "$transport_plane_equipment$ 生产"
cic_organization_trait_product_air_defence: "$transport_plane_equipment$ 防护"
cic_organization_trait_product_air_range: "$transport_plane_equipment$ 航程"

cic_organization_trait_product_convoy_product: "$convoy_1$ 生产"
cic_organization_trait_product_convoy_defending: "$convoy_1$ 防护"

cic_organization_trait_product_land_support_product: "$support_equipment$ 生产"
cic_organization_trait_product_land_support_entrenchment: "$support_equipment$ 防护"
cic_organization_trait_production_land_support_supply: "$support_equipment$ 改进"

cic_organization_trait_product_final: "高效生产"


cic_organization_trait_synthetics_1: "合成工艺"
cic_organization_trait_synthetics_2_rubber: "橡胶 I"
cic_organization_trait_synthetics_2_fuel: "燃油 I"
cic_organization_trait_synthetics_3_rubber: "橡胶 II"
cic_organization_trait_synthetics_3_fuel: "燃油 II"
-------------

You can just create a localization mod that only provides the localization file