One thing I look for is to see that the entire stake pool operations is run in a legally compliant way meaning there is a registered company behind it or / and a known individual who will pay taxes and have accountability for the service being provideded.
Sharing your identity would potentially allow to review is you have additional staking pool interests and bring a sort of proof of reputation quality to your staking pool operations. You would put your reputation at stake and your social & professional network being aware of that. It would also possibly emphasize that you might have the right background & expertise to operate such an infrastructure & business.
Also I would want to know if the pool will be run in the Cloud (and which one) or on premises and in which geographical location / zone. This would allow me to choose diversity for the benefits of the Cardano Blockchain.
If you would share quality statistical data about the pool operation it would be a proof of the serious & professional operational qualities behind it. You would need this data itself to optimize on your pool operation infrastructure anyway. It’s not like unnecessary data requested.
Contact number & claim / complaint management process would show you are seriously Customer Focused and ready to respond to whatever reasonable requests / questions your Customers would have. This becomes more relevant & interesting if your pool provides and added value / service next to the staking operation.
Following certain period of operations publishing any reliable 3rd Party audits of your infrastructure would show that your pool is operated in high security & scalability context and is a strong contributor to the Cardano Blockchain Network. It might present all the secondary security measures taken for the pool operations.
Finally the design & branding of your website would be one potential indication of the initial invest you are willing to make in regards to the staking pool business and indicate you have the liquidity it requires to manage & scale the infrastructure and also act as a sort of minimal guarantee.
Would you have any value added services for the customers who delegate to your pool would show long term strategical thinking, entrepreneurship and willingness to differentiate. Of course this should be something lightweight and fully optional as it would cut your and / or our profit margins, which is not necessarily expected. But some might decide to support non-profit staking pools and donate their staking rewards for a good cause.
Finally financial transparency would be another possible way to ensure your are taking healthy profits, but not at the cost of lowering security & scalability standards of the infrastructure you are running. This would be more interesting in comparison with other pool operators to let us avoid the extreme ends of the spectrum.