With the arrival of my Apache Labs 10E, I finally worked up the courage to put my HL2 under the knife for the surgery required to convert it to a Plus version.
No, it didn't get fatter; it just got better.
The update required removing a 0603 ferrite bead, adding a 0603 resistor & a small piggy-backed PC board, and updating the gateware.
And a few other small things that, all tolled (or is it "told"?), took 20 minutes.
It's the gateware thing that got me - I'd never heard of either the word or the process, but I know I didn't want to risk bricking the HL2.
Long story short - I should have done it long ago. Everything went smoothly.