Yep, I agree with the mongrel part, and I'd go with a pack of:
Ellis - if he can get fit and on form
This is a big aggressive pack - I'd have picked Peacock if he was fit, and it's a year too late for Morley, but I don't think Hock has the right temprement. He loses his rag at silly times.
I think a pack like the above has physical presence, Westwood certainly got stuck in at Wembley in 2011!
As long as we steer clear of the likes of JJB, Farrell and Wilkin who do a solid job but hardly scare the opposition then I think our pack could go well.
Like you I want dynamic!