I think it would be a good idea to have a home screen for all 212 accounts with the balance of each account on it.
Something I also do on a weekly/Monthly basis (If I can be bothered) is to go through each account and tally up my total gain from each account.
For example… On my S&S ISA I would add up.
Interest, referral bonus, current profit off holdings, P&L, Dividends and Cashback to get a real terms where I’m at with each account.
To have a home screen with…
Invest Total account Total Gains
Cash ISA Total account Total Gains
S&S ISA Total account Total Gains
CFD Total account Total Gains
With the option of jumping into each account from there, would save me a lot of spade work.