Thanks for putting this thread together for everyone @Rebel_Defi! 
Following up from the discussions within the Validator Discord and Terra Rebirth TG, Ceres Ventures / Terrafirma NFTs supports this proposal on Terra2 (phoenix-1). That being said, there has since been a second proposal suggesting a shared minimum across all validators, which we think is also a pretty darn good idea.
However, in either case, we also support an ammendment that re/delegation restrictions be reset after the implementation of this update, allowing anyone who staked to a 0% validator be able to adjust their delegations accordingly (to avoid any situation where people feel it was a “bait and switch”).
"Why 5%?": While Agora was still being prepared, I created a poll within the Validator Discord asking what they believe the minimum commission should be (options ranged from 0-10%).
At time of writing, over 81% of votes cast on this Discord validator poll are for “5%”, showing strong unity within the Terra Validator Community on this matter 