In my humble opinion and at least for CMC/FF/VS/JPS and maybe Beck cars, As everyone says, getting at the front frunk latch is relatively easy to release it from the outside so I've never bothered to install an emergency latch pull. Besides - Where you gonna run the cable to? Into the wheel well, maybe? That's about the only choice but you could have just reached up under the latch and moved it from below, so..... ???
The rear engine cover is a whole different Burrito, though. Once it's buttoned up, the latch isn't accessible without major effort. Like taking all of the lower engine heat shields off to let you reach waaay up in there, to the total extent of your arm to reach the latch and THEN have to move it sideways. (Major Tip: get Stan to help - He says he has really long arms). Or maybe, get out the Sawzall, major.
Given that, it makes a LOT of sense to install an emergency cable back there. It's easy to do, you can follow along outside the original cable tube over to the driver's side rear wheel well and poke the cable through a hole in the inner fender, crimp a loop onto the end in the wheel well to keep it from disappearing back into the engine compartment and when you need it, just pull hard on the loop and
"Presto!"
The engine lid opens.
Have I done this? Weeeeeellllllllll, no, not yet. I'm just tempting fate.
But it's on my list. Who know? This could be the year....... 