What to do with my list?

Hey All,

I have a list of about 4000 with a good (in my opinion) open rate of about 30%. It use to be a lot higher but I've switched brands/ideas/thoughts a lot and I think people started to notice the inconsistency. I've never felt 100% comfortable in the niche I was in and I think I've mentioned that before in other posts.

I've been in business for over a year now but it's been a journey and I've constantly evolved.

I finally realized recently what my 'legacy' is in terms of what I want to accomplish with my life/business and I'm ready to revamp (for the final time) to build my business in a really fulfilling way.

I was wondering if anyone had tips on what to do with my list? Currently I send out a weekly action tip with marketing advice but I can see this going a lot of ways:

Tell them (for the 3rd time) that I'm changing sites/visions:

a) keeping them all on my list but getting more unsubs (when i switched last time, i noticed 10-20 unsubs an email compared to 1-5), spam marks and lower open rate

b) sending a new opt-in notification which may mean losing 70% of my list.

What would you do and if none, what's a better solution??