After 6 ...e5 7 Bxf6 and black has problems already. Black does very poorly from this position.
Reaching the Sveshnikov from d6

Agreed. Thanks for pointing that out.
What about a sort of accelerated Sveshnikov with 5..e5 in that line? Seems to me the most punishing try for White is Bb5+, but it doesn't seem so bad.
I have a move order question for the Sveshnikov.
Is it possible to reach the mainline from 2..d6 ? This is what I had in mind: