The key factor to me is the battery life, personally.
I am very very disappointed that Apple put such awful battery in SE.
There isn’t an option for more battery. The SE is the price that it is because they can re-use existing design, while just updating the internals. You can’t insert a larger battery without needing to shift components around or change up the entire casing, and that would require new manufacturing, new research and development costs…it’s against the entire philosophy of what the SE is.
I’m willing to bet that eventually the SE line will be in the iPhone 12 mini form factor, or possibly the XR. It will have updated internals and reuse those casings. The SE is always going to have trade offs for the price…but not in pure performance. Other ways.