I am currently trying to decide which FF program I should use for two upcoming business class trips until the end of the year from Canada to Europe on Star Alliance and how to make most out of it (I.e. to obtain a higher status with any of the FFP I am currently a member or any other better one).
The route will be identical on both runs - straight from Vancouver to Frankfurt with potential domestic transfer flights in Germany
A bit about my background:

(1) What is your home airport? YVR Vancouver
(2) What types of fares do you usually buy ? Usually I buy the cheapest Economy fares for private travel, but for intercontinental work trips it’s usually business class fares in either P, C or Z. For trips inside Canada or to the US it’s Economy Class and generally a flexible option.
(3) How many miles do you usually fly each year? 25k-50k, could be over 50k in 2022
(4) Do you have any kind of status at present? What is it? Finnair Plus Silver (27500 Tier points, 28/46 flights in current tracking period), LH Miles & More Basic (17k status miles in current year) and Aeroplan Basic (0 SQM,SQD or SQS)
(5) What is most important to you in a FFP?
As I travel outside of work generally in Economy, I would love to enjoy business class like benefits on these trips, like priority baggage drop and boarding. Lounge access is covered by priority pass using Canadian credit cards. Point redemption for flight awards is also important, as I collect Amex MR and Aeroplan points using various credit cards in Canada on a daily basis.
(6) Which routes do you fly most often? 1 - 2 times a year from Vancouver to Frankfurt/Berlin, a couple of times Vancouver - Toronto with potential transfers to Reykjavik and a few domestic flights from Vancouver to Winnipeg or other more nearby locations. Once or twice a year to destinations in the US.
(7) Preferred Airlines Open to anything, but flights to Germany are generally on LH direct. Otherwise Air Canada for domestic flights.
(8) Do you travel for work or pleasure? (Can you chooose your airlines, class of service?) For pleasure I choose my airlines, for work I am sometimes limited in the choices of which routes to use. Generally all flights over 6 hrs in business class and below that in Economy for work. Routing for work is generally the most direct option with least transfers.

Would really appreciate your expert advice of which FFP to go with! Many thanks in advance!