Well, your concern about the incline press nailing your front delt just as hard (or harder) than your chest isn't all bad, of course...most of us probably have somewhat overdeveloped front delts in relation to our medial and posterior heads, but hey--the strength is always nice
I do think you have somewhat of a point, though. In my experience, the incline press hits the anterior delts harder than almost anything else, with the possible exclusion of DB presses. It's pretty simple: it's a less "powerful" movement than a military press, but you're going to be using a hell of a lot more weight, and that'll be more pronounced as one approaches the crazy poundage land of 400+ lbs. inclines.
More weight has the potential of yielding more growth in the delts. ****But**** I think it's a bit short-sighted to say, "Well, if it hits the shoulders that hard, it
must be at the expense of the pecs."
In logic, that's the fallacy of false dichotomy--that is, an artifical "either, or" scenario. In fact,
because of the increased delt involvement, you could hit your pecs even
harder than in a bench press, in spite of the fact that it's lesser weight (but it
does involve a much greater range of motion, so that's offset somewhat).
Does that sound conflicting? It is because I haven't made my mind up about the whole thing, either

I think your solution should be to try low-incline presses, say around 30-35 degrees.
That
should be kinder to your rotators than flat presses, and it'll definitely still recruit your pecs like all get out. So you strike a kind of compromise.