i know that it is very early to suggest this but i like to say it early so please consider thinking about it when(if) release of it on f-droid become reality in the future.
i want to suggest if it was possible (from anti feature removing perspective) and f-droid contributors liked to build new firefox, please consider making package name of it distinct from old (current) fennec f-droid.
why this is useful?
because old firefox (fennec) was rather very powerful. it was like a complete desktop firefox with some about:config tweaks so having it as an option for some rare case scenarios (websites forcing mobile site even with changing useragent and …) and some other scenarios is really useful.
In the end thank you all contributors for your great work.