Blind Merged Mining and sidechains could potentially address differences in opinion between Transaction OG's and "Wizards".
Personally, I've always kept the opinion that BTC should stay what it was originally designed to be, an immutable ledger that kills the double spend and creates value through proof of work, and I never really liked inserting non-transactional (ordinals/inscriptions) data into the blockchain.
Sidechains could potentially give these other groups their own home, while still pegging to BTC via escrow but the long term concerns are obvious. With that being said, I feel using terminology like "51%" attack is a hype mechanism... (we're talking minder-mediated peg outs in BIP-300) Long term dangers seem premature to me (fees vs. bribes, cartel bs, collusion.
It will be interesting to see what the experiments show on testnet.
I hope L1 always stays immutable, PoW money ledger.