Fuel pods (that can replace missiles on fighter craft rails would be nice), but also multiple rocket pods sound good, as suggested above.
For the UI can I request that the research list can be sorted by its various column headers(the one at the top of scientist/research labs/completion dates etc). Like you can in the view tech window.
Also when sorting ships in the designs, single ship view and taskforces windows, it would be handy to be able to remove types from the lists as opposed to just sort the order the types/ships are shown in (make them a bit less wieldy).
On this sorting by type etc - would it be possible to add another player designation into ships, just a new field we can sort ships by (Battlefleet/survey/recon/support/carrier fleet/fighter for example), these lists get very long and really only creative naming is keeping me sane, its less of an issue now im getting to grips with the OOB on the task forces window.