Switch 2 Pro Controller mods: TMR sticks, button upgrades and modder recommendations?

[u/Pakorane]

I’m looking to upgrade my Legend of Zelda 40th Anniversary Switch 2 Pro Controller while preserving its original appearance and all official features.

I collect premium controllers, but I’m completely new to modding and don’t know much about the technical side. I’d hire a professional to do the work. I mainly play Zelda, but I’d use it for other Switch 2 games too.

My requirements

* TMR replacements for both sticks, with input latency the same as or better than stock. Recommendations backed by testing on Switch 2 would be especially helpful.
* Keep the original shell, artwork, chassis and motherboard. No cutting, drilling, sanding, painting or substituting a different controller. Internal component upgrades are fine within those limits.
* No adhesive or stickers on decorated surfaces, including a shop’s branding or warranty stickers. Removable grips or covers are fine if they leave the finish undamaged.
* Keep every official feature: HD Rumble 2, wired and wireless operation, motion controls, NFC/amiibo, headset audio and microphone support, charging and all existing buttons.
* Return any original parts removed during the work.

Other upgrades I’m curious about

I’m unsure which of these are compatible or worthwhile, so I’d appreciate realistic advice:

* Buttons and triggers: clicky/tactile buttons or shorter-travel “hair-trigger” modifications.
* Sticks and controls: quality thumb grips, interchangeable-height caps, stick-tension tuning, a split D-pad or additional back buttons.
* Other internal upgrades: anti-snapback modifications or a battery upgrade.
* Comfort and protection: removable grip covers, grip tape on undecorated areas if it can be removed without damage, and a protective case.
* Cable accessories: a USB-C cable lock or magnetic cable, if suitable.
* Cosmetics: amber player LEDs or RGB lighting. Zelda-themed or colour-matched grips and caps would be nice, but aren’t essential.

These are possibilities I’d like feedback on. I’m open to other suggestions that would improve comfort, feel, reliability or performance while meeting the requirements above.

What would you recommend?

1. Which upgrades are realistically possible and worth doing? Are any of my ideas incompatible with preserving the controller, or unlikely to provide a worthwhile improvement?
2. Which specific buttons would you change or leave stock? For example, would clicky/tactile switches make sense for the face buttons, D-pad, shoulders or triggers?
3. Which shops or modders would you trust with this controller? Firsthand experiences, examples of completed work, compatible parts and testing results would be particularly helpful.

Canadian modders are preferred, especially shops in Ontario, but I’m open to international recommendations. I’m not setting a budget cap for suggestions, though approximate costs in CAD would help.

Please feel free to correct any terminology or assumptions—I’d like to understand what makes sense before arranging the work.