New dash ideas

[thebottomfish]

Hey guys, last year after getting the boat I rewired everything up to the dash panel because I wasn't sure what I wanted to do with it.
With the season over im going to pull the dash and make a new aluminum panel to house my ff/gps, tach and fuel gauge along with a few toggle switches.
I'm wondering two things...
Currently my fuel gauge is run off a momentary on off switch, should I run that off ignition? Regular on off? I'm not sure how most of you guys run them
I'll have a nav off anchor switch, cabin/deck lights switch, momentary horn and that's it. Should I include anything else on switch? I'll probably add an extra dummy switch just for the future but figured I'd ask what else is a good idea to have as a toggle
Thanks in advance!