The main lake in question that was oligotrophic enough to support lake trout (Savelinus namaycus) and has a very small littoral zone in ratio to deep water (averages 40 feet deep) has a minuscule amount of macrophytes and even less now due to the termination of septic tanks.
I would be all for attempting to reestablish Cisco (Coregonus artedi) and have even volunteered to hatch eggs to produce several hundred to a few thousand fish.
I just don't think attempting to supplement warm and coolwater fish would increase forage much for cold water fish. Case in point yellow perch have never been very common in the lake chain.
Historically the smelt and cisco apparently coexisted O.K. as the chain had one of the most prolific populations in the state.
I understand the nature of the NANFA ideology but why let a particular niche go to waste when the native species in the lake seem to be just fine?
Furthermore the rest of the watershed downstream cannot support Rainbow smelt due to low D.O. in deep cold water later in the summer. If the smelt did make it downstream during times of cool enough water they could potentially make it to Lake Michigan which already has them.