[Hiring Talent] What are "limitations" on what smart contracts can actually do?

[Real_Person]

I have many ideas for projects and am seeking people who are familiar with "the limitations on what smart contracts can actually do" | Think BIG = Almost anything is possible. | For example, people can deposit funds which are released at a later date, and only if they approve, else their funds are returned.

The above example is possible, but is it complex for the users, or "easy" with the ETH wallet?

(Bigger & Better!) How about an "option" to buy a certain amount of tokens at a later date for 8% below average market prices?
Do you know how to do this? Do I have "permission" to PM you in the future?

[Real_Person]

bump
Obviously I'm a noob, but your answer will also be seen by others.
In addition, are there not investors here who know the answer(s)