I wish someone would take on an open-source project for a sports watch with full features like vo2max estimation, etc. like a cyanogenmod or lineageos but for

I wish someone would take on an open-source project for a sports watch with full features like vo2max estimation, etc. like a cyanogenmod or lineageos but for an older watch model someone has completely decompiled the firmware for the Garmin Forerunner 245 which is very similar to a Fenix 5 imagine if someone took on making open firmware for it https://github.com/anvilsecure/garmin-ciq-app-research/ https://github.com/anvilsecure/garmin-ciq-app-research/ if taking on a brand name might incur lawsuits there are other watches like the wahoo rival which was completely retired and they got out of the business (it was only $99 too) or there are other ppen hardware options from China