With Vlad and Bo currently under 2 years of control left, I think you have to start wondering if they are "long-term core" pieces.
Vlad's 2023 - 24 wRC+ is 118, which ranks him 13th this year in wRC+ and last year 11th overall, his fWAR is 0.1 (15), and last year 1.3 (18), seems super-duper average to me. How much would you feel confident in giving an average 1st baseman with weight issues a long term deal? Plus how much would it cost? I think if you could sign him for 8 x 144 (18 aav), you would, but I would be very concerned if it was for 20+ long term. I actually don't know what his trade value is, as teams could look at his stats but also he has name recognition. Vlad seems like a guy that could break out on a different team once he gets out of his comfort zone and has to prove himself to a new organization.
Bo, is the better overall player. He has a history of being a 4 - 5 (f) win player, basically every year he has been a regular he has put up a 4 - 5 (f) wins a year. His defense was average last year (16th overall) but his defense has been bad this year (still early). I think you have to have some projection on what he is going forward. A lot of his batting value is based on hits - last year his avg was 306 but his obp was 339 meaning he didn't take a lot of walks (BB% 4.5)- and as he ages, his approach might degrade that hit tool. You can say Bo is a 125 wRC+ hitter.
With Bo being a bad/average defender at SS, his value would be hightened if he moved off SS and on to a less defense intensive position like 2nd or 3rd. I don't know if he would move off SS with the Jays. And how much is a 4.5 (f) win player that needs to move off SS worth to the team, and how much would you be comfortable paying him? I wouldn't like 25+ long-term (maybe if he agreed to a permanent move to 3rd?). I would look in to trading him now or in the off-season. Something like 3 top 100 prospects or 4 top ten team prospects would be worth it.
Take that money you would pay them and invest that into a 3rd baseman like Bregman maybe? And have the prospects coming up to give you multiple years of cheap control.