Comments/Ratings for a Single Item

Easily handicapped by giving extra zorkmids at the start? Yes, that's a
good idea. No, not so easy.

How many zorkmids? Of course, if two players played a long series of games
against each other, the 'progressive handicap' would be perfect.

But if two strangers play for the first time, how many zorkmids? How many
zorkmids per rating point? When Kasparov (rating 2800 or so) plays Patzy
Fish (rating 800), does Patzy start with an extra 2000 zorkmids? And where
do we get all those zorkmids anyway?

No, not so easy at all. 

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Nobody has bothered to guess Roomie Chess. The answer is that you can
freely move onto squares occupied by friendly pieces, which saves you rent,
but then a capture would destroy all pieces on the same square (this
disadvantage balances the advantage of saving rent). 

I hope that the reason nobody posted a guess was that the answer was too
obvious to mention.

I agree, it is hard to come up the specific scale of handicap, however
what I meant by 'easy' is that to give handicaps in Rental chess does
not require any special torture to the rules.

As for where the handicap zorkmid comes from, from the same the salary
per turn comes from. However my original idea that I discarded was to tax
the better player, but such a rule would be far too complex I would think.