People who make modules tend to get it working and start shipping before they think things through. Not everyone can have a focus committee. Therefore I propose that we do it for them.
I need the ability to hard mount a module. no less than three screw holes, preferably 3.5 mm for both 3 mm & 4-40 screws
I would prefer that they came with the header not attached, and the SMA connector unattached, because if I need straight up connectors I get 90s on the wrong side of the board.
5 hole SMA connections give you many mounting options. 3 tabs give you one. There should be a way to disconnect the built in antenna if you need an external antenna
if the wizard who designed the LCD I2C backpack had shifted the 4 pin connector 2 hole locations, .2", to the inside of the module you could use 4-40 standoffs on all 4 corners
a one channel optocoupler or level converter would be nice. a 12 VDC to 3.3 level signal converter would be nice.
putting a battery the size of an aspirin on a module is silly. put a JST connector on it, or a CR2032
If a module takes 5 V power and 3.3V signal should it not have a zener diode on that 3.3V input?
if you could get the attention of those guys for 1 minute, what would you suggest?
added: I mount NANOs on perfboard ans I add a pair of jumpers for 0 & 1. I can use Serial and disconnect 0 & 1 for uploading.
I2C device makers should put address change pins on every board, regardless of function.