Yes I do.
It all comes back to the much earlier discussion on "Wizards suck at low level". But it goes beyond that into higher levels. The entire concentration mechanic pushes arcane casters into roles that players might not enjoy playing as much.
As per your example, casting Foresight on the fighter instead of casting Time Stop or Wish or Meteor Swarm.
Seriously. What a rip! I have one of the most powerful casters in the game and I'm stuck buffing the Fighter with my highest level slot. WT?
Btw, I get the whole "help out the party" deal. I just don't like how shoehorned wizards (and other casters) are into that role (or at least expectations at some tables encourage this). When playing an arcane caster, I do not often want to be a blaster and I do not often want to be a buffer. Once in a while, sure. No big deal. But mostly, I want to do battlefield control (and I want decent defensive/mobility spells if a bunch of monsters get in my face). 5E nerfed battlefield control pretty darn heavily with one spell at a time and saves/checks every round.
One aspect of the game which might alleviate buffing a bit is if casters were able to create scrolls and non-casters were able to cast from them (abet with potential side effects). The fighter could then scroll cast Fly on himself.
Btw, the "allow multiple concentration spells" has not heavily influenced my game yet. Granted, we are only at level 6, but the most concentration spells anyone has ever cast by a single PC is 2 at a time and this was hardly game breaking (Shield of Faith with Spirit Guardians by the Cleric). I suspect that after nearly 40 years of not having a concentration mechanic at all, D&D survives quite well with one that merely loses spells and does not have super nerf limits on it. IMO. If it gets to be a problem at higher level (which I suspect it won't), I'll probably limit it to 2. So far, though, it has not been an issue. But I've talked with my players and they really enjoy the ability to cast whatever they want, when they want and not have this artificial albatross handcuffing them.