What were the Negative Impacts of Further Devolution during the Coalition Government onwards?

-Scottish Nationalists believe the Additional Powers after the Scots Referendum don't go Far Enough. Scotland controls their % Rates? -Powers of Devolved Bodies still under Approval by Westminster. Wales wanted Policing and Justice, UK Government said No -The Mayors have Limited Powers - October 2020 saw Greater Manchester in a Higher Tier of Lockdown than what the Mayor called for. Large Parts of England is still very Centralised - Inequality in Devolution across Britain?