It's better to be in the tent, pissing out...and you can't effect any change when you've exiled and ostracised yourself whilst remaining bound to certain terms and conditions.
This period has massively reduced the UK's standing in the international view IMHO. Shown to be a fragmented, divided nation, riven with political and class self-interest incapable of presenting a unified, negotiating front on the most important decision in a generation. Nobody in this world will take the UK seriously again. Unless we send an aircraft carrier to the South China Sea of course
It is/has been a watershed. The EU must by now regard UK Govt in the same way as UK Govt regard IoM. A collection of disorganised, backwater, hickey amateurs.