That may be a good idea. I have a fixed routine. Sometime I feel that I have lived 1 year of my life just like I live 1 day of my life. The problem is I don't know how to change my routine. Everything that I do today, I still want to do it 10 years from today. I can only add in. I don't know how to take it off. Anything that I take off, I may lose it forever.
Ah yeah I know what you mean hehe, I definitely tend to do that... I keep adding stuff and they just get longer and longer.
I reckon alternate certain drills and exercises. You can even split the routine in half, and do half today, the rest in 48 hours. You won't lose anything by doing it that way.
Even if a certain drill is done once a week or even week and a half, it's still enough to maintain and build on that skill (of course it depends on the drill). Prioritise what you feel is important, and accessory stuff can be a bit more spread out and alternated. That way it keeps things fresh and exciting to get to change up the routine and work on different things.