Sort-of hijacking this thread, but on a similar quest (of finding a not-entirely-bore line against 5.Re1) I stumbled on 9..b6!?
It's the third most popular move in the position, but FAR behind (eg the Lichess Master DB has 860x Bf6, 140x Ne8, and 14x b6). I've not quite been able to find out why, and it seems to lead to /slightly/ more interesting positions.
It's still not a miracle solution; if White wants to kill off the game he can, but at least he'll be largely on his own, and the positions are a bit different.
The 'practical value' is kinda-sorta corroborated by the Lichess Online DB: In 2200+ No Bullet (which so far has given me a relatively good insight into ~2100 level OTB play), 9..Bf6 scores 45% for Black, 9..Ne8 climbs up to 50%, and 9..b6 crashes through with an astonishing 65%.
The sample size is extremely low (33 games, compared to 1750 with 9..Bf6), and there might be a certain bias in it (if eg it's a line that 2700s play when they want to avoid a draw against a 2400, it will "automatically" get insanely good stats, but doesn't tell you what to expect when fighting someone of your rating), but it's still a fun thing to take note of.
Here are two sample "games" (just letting Lc0 run for a bit, with some amount of guidance):
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https://lichess.org/oWKTHAUD#0 "Ambitious" White. Leela initially likes this a good bit for White, claiming +0.5 to +0.6, but when following the line, this sort of dissipates, until the final position is given a flat 0
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https://lichess.org/pGzUB7fi White maintaining his idea of "killing off the game", just playing as solid as possible. Naturally we can't miracle conjure something big here, but some ideas remain.
Overall, this looks like a decent option for Black to me.