# Open more categories for our main topics: proposer/builder separation, cross-domain MEV, and orderflow auctions
**URL:** https://collective.flashbots.net/t/open-more-categories-for-our-main-topics-proposer-builder-separation-cross-domain-mev-and-orderflow-auctions/186
**Category:** Site Feedback
**Created:** [August 29, 2022, 9:37pm UTC](https://collective.flashbots.net/t/open-more-categories-for-our-main-topics-proposer-builder-separation-cross-domain-mev-and-orderflow-auctions/186 "2022-08-29T21:37:06Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@guayabyte](https://collective.flashbots.net/u/guayabyte)
#### Post date: [August 29, 2022, 9:37pm UTC](https://collective.flashbots.net/t/open-more-categories-for-our-main-topics-proposer-builder-separation-cross-domain-mev-and-orderflow-auctions/186/1 "2022-08-29T21:37:06Z")
I want to open three more categories:
- proposer/builder separation
- cross-domain MEV
- orderflow auctions
That’s where I like our researchers and developers to collaborate with the ones from the community. Much like we did for mev-boost in the github repository, but for topics that are bigger than a single repository and a single project.
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### Author:  [@jolene](https://collective.flashbots.net/u/jolene)
#### Post date: [September 8, 2022, 8:48pm UTC](https://collective.flashbots.net/t/open-more-categories-for-our-main-topics-proposer-builder-separation-cross-domain-mev-and-orderflow-auctions/186/2 "2022-09-08T20:48:00Z")
We have been discussing this internally today - I think it would be good to have a general research category first. If we see a lot of uptake and discussion in this category, then we can go ahead with splitting it up further as you have suggested.
My concern with splitting it immediately would be that we are not publishing formal research very frequently right now, so it might be better to concentrate activity in one place. We already have a lot of places for discussing partial ideas and speculation (like github etc), but I imagined this as more for feedback and conversation on research pieces we have published (like the FCFS post).
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### Author:  [@guayabyte](https://collective.flashbots.net/u/guayabyte)
#### Post date: [September 9, 2022, 6:21am UTC](https://collective.flashbots.net/t/open-more-categories-for-our-main-topics-proposer-builder-separation-cross-domain-mev-and-orderflow-auctions/186/3 "2022-09-09T06:21:11Z")
Sounds good. We can use tags inside this category, and see how that works.
@jolene please fill the category description in here:
> [@About the Research category](https://collective.flashbots.net/t/about-the-research-category/230):
>
> A space to discuss MEV research produced by Flashbots Research and our community. Flashbots Research plans to publish most of our future writings in this category. We also host the products of FRPs here. We welcome community research posts, reading lists, open research questions, brainstorming threads, all things MEV research. Use this category to join us in illuminating MEV through research.