Bitcoin transaction might face some problems due to Segwitx2 Lockin, use ethereum or LTC for transaction.

Due to Segwitx2 Lockin and possible orphans and network freezes.
Other Network remain operable.

I think that ultimately the [DCG] hard-fork is going to fail to safely transition the entire network. There's no replay protection. It's an unreasonably short timeline. It doesn't make use of the prior hard-fork research efforts.

Perhaps the more important question is: if the group addresses these technical concerns, will developers support it as well?