If by "reconsidered" you mean moved or deprecated; probably not, as the general consensus is that 1.0.19 is definitely faster. If there's interest, we can definitely add some Current Patch categories!

It is linked at the top of the page for the game, right below the title!

It has to be permanently hosted video, so a vod from a twitch stream won't work, but if you highlight a twitch vod, that's totally ok!

Wrench heal slides -- swinging at a wall and holding heal -- is slightly faster than walking if you have a distance long enough (around two wrench cranks sfx in length, if that makes sense).

Glad to hear you're interested in speedrunning! I am working on an any% guide and I swear it's coming soon haha

Right now, BestGirl/Save Myla doesn't have a formal leaderboard on SRC, but it -- alongside countless other category extensions either not popular enough for SRC, better suited to be challenge runs, or both-- have unofficial leaderboards maintained on the HK speedrunning discord (linked in the sidebar). The pins of #misc has you covered!