Walther PPK magazine release upgrade

[MymuttBear]

I have a Walther PPK .380 Auto and I want, if possible, to upgrade the dinky little magazine release button, pictured, with something easier to operate. I was hoping to get something like the blue oval button pic which is listed as a magazine release for a Q model Walther, which I doubt will fit the PPK, or drill and tap the original and fit a round button like in the third pic.
Has anyone done a mod like I'm suggesting? Do you see any issues/ better ideas?

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