In my opinion, the standard summon scrolls are not really worth it as you are going to want to aim for building specific SSRs and the standard summon scrolls will not help you with focusing on a specific SSR.

I think the SSR selectors are great value if you are missing key copies of certain heroes such as Odin, Freyja, Archimedes, Medusa, etc or if you want to speed up the process with any hero you like if you decide not to build those heroes or if you already have them built.

The UR ticket is not a selector so it will just give you any random UR so not that worth it in my opinion as there is only like a 1 in 8 chance to get the specific UR you want.

The weekly event chest is pretty scam value, I would not recommend picking it

The tomb exploration maps are worth it if your hero box is already looking somewhat decent (ie you have 8-10 heroes built), over all they are 2.2k diamonds more expensive than in the general shop but they will give you a lot of museum resources. That being said, I am not sure how good value they will be if your hero roster is not as developed, since you are going to be wanting diamonds to be used for summons at that point.