The obvious risk is forking the chain. Then you taint bitcoin's reputation as uncensorable. It also constrains Covenants. You may disapprove of them, I don't know but creating conditions to move your btc as part of your vault seem relevant to me. Where the real dechotomy lies imho is that both sides of the argument want what's best for the ecosystem. BIP 110 advocates are convinced they are protecting the network against an evolution of ever increasing spam and the Core side consider that introducing a BIP to fight this fight is setting a precedent and sets Bitcoin on a path away from neutrality. What other fork will be suggested after the implementation of BIP 110 to constrain transactions even more once spammers have found thei network's next weakness ?
