What's bad about this?

Hi:

I have a trusted LAN with two Suse 9.1 Linux boxen each with the same
two user accounts, behind a firewall. The only flaw is a VMware running
Windows with IE sometimes, for a very limited number of web sites that
need it.

I have decided to first change the two users' default groups to be a
private group for that user, then change our umasks to 002.

The reason is so I can create a directory containing archived digital
photos belonging to a mutual group and with the gid bit set, that each
of us can write to without having to constantly fiddle with permissions.
The private default groups allow us to retain protection from one
another accidentally deleting one another's home files.

What might be bad about this plan?

Thanks.



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_____________________
Christopher R. Carlen
crobc@earthlink.net
SuSE 9.1 Linux 2.6.5