Get Frolik the f out of the top 6. Bennett on LW, Tkachuk on the RW for Monahan. I think they'd do real damage. Tkachuk and Bennett are both good cyclers and Monahan is severely underrated at doing it (in the 3rd against Colorado when away from Gaudreau he looked heaps better and more creative in the o-zone).
So:
Tkachuk-Monahan-Bennett
Gaudreau-Lindholm-Neal (this line outside of Lindy would get wrecked defensively whereas Bennett and Tkachuk are both good defensive wingers)
I don't mind it, if Bennett can't excel with Monahan and Tkachuk then that would be pretty sad.