Is a 25% Fund of Funds Proposal with These Terms Typical, Aggressive, or Worthy of a Counteroffer?

We had an interesting fund of funds proposal for 25% of our fund. *Do you know if the proposal is typical or aggressive or have advice for a counter?* This is the offer at a high level: • 40% of commitment allocated to initial investments of our fund. • 60% of commitment allocated to co-investments in subsequent funding rounds within our portfolio ventures as selected by the FoF (we don't receive any carry) • Option for FoF to lead subsequent funding rounds (for individual portfolio companies) as Lead Investor • 1 IC seat (we're okay with it)