Your number three on the list, native gzip support works for a long time in iss, apache and all major browsers. What is Lotus waiting for? We all spend a terrific amount of time creating light webpages, while one little extra http process may do the trick 3 times better.
http://www.lotus.com/ldd/nd6forum.nsf/0/745a36e69b55114e86256db30061b666
Best wishes,
Laurens