I am more of a petrol head my self. I would just go for a bigger carburettor higher compression better flow and a tuned pipe. For a little 2 stroke tuning i recommend this page Topplocksverkstan
I found this interesting reading Iron_phosphate_battery
But as you said earlier, lets keep this tread clean

You are right. It IS really really really really tiny. You need a hot air soldering gun and I think after loosely studied the schematic it's not worth the effort. These fuses often are there fore extra security if something else goes wrong, like some enthusiast trying to recharge a dubble Japod mod being tired reversing the polarities . (Done that with motorcycles computers other electronics and some sensitive electric stuff, otherwise we never learn. Just can't keep my fingers away) Nah ! If one is to worry about the N1140 USB charging IC or the I/O IC just put a fuse on the Usb cable or maybe if its accessible solder pin 1 on the usb connector through a 2 A fuse of your choosing. I dropped a battery powered drill on my n900 cracking the touch screen and display. Bought a new n900 for 525$. I ended up repairing it selling it to my brother but I should just have bought the the new one using the old one for spare parts.
BUT I don't think it is impossible either using a fine hot air soldering gun and a small tweezer, with some risk damage the surrounding components. If you have insurance send it in they will probably change the phone out.