Honda's meat and potatoes are still very solid cars (Accord, Civic, Fit, Odyssey), and Acura has one particularly important segment well covered (RDX / MDX, which do look the best with that grille).
Yes they've had some issues but most of them are either styling issues or niche cars. Styling issues can be fixed...but it requires the willpower. As for niche cars...they've always had a bit of a tendency towards that...
The new Accord, while rather bloated for most on this board, probably works really, really well for its intended audience.
The 5 speed auto is outdated but 99% of people don't care. And nobody ever complained about the manuals.
Engines are still very solid and could probably run forever.
New TSX was a real letdown, although they did facelift the grille...
What would I do? Glad you asked.
-New NSX that looks recognizably like the old NSX. Mid engine, RWD, V6 naturally aspirated. 325hp / 270 torque. Make it light with some fancy aero tricks. Park one in the showroom.
-Bring back and update the S2K while you're at it. Some slightly more aggressive styling would be good.
-Drop the Crosstour. Add Accord Wagon and give it enough rear rake to look almost like an A4 Avant, which is to say not your mothers Volvo 850.
-Why does the CR-Z exist again? Ditto Element and Ridgeline?
-For the love of god please update the CR-V.
-The Insight needs to be more car. More Prius. More expensive.
-Push the hybrid Civic somehow.
-Acura tooth grill banished forever. TL needs restyling.
-TSX given the drivetrain from the RDX (turbo + SHAWD).
-Let the current RL die a peaceful, quiet death. Reintroduce it in a few years but make it worthwhile (read: bigger and 400hp).