RE: relating more towards expanding the field/increasing competition
No one wants to initiate a tech cap because everyone is taking advantage of it, to a certain extent, with their own setups (i.e. "Open is cheaper for me blah blah").
I'm going to raise it because i know I am going to get flamed for it. Oh well.
Well, evidence, not theoretical malingering, shows that we had a pretty good championship up in canada this year. in a lot of races any of 5 guys could win. the 34mm seems to be working. Even the mightly MMUSA team was in the thick of things. The other thing is that guys can go out and buy stuff without having to re-invent it themselves. Like call up some mitsubishi guy in belgium/australia/thailnad/anywhere and say "what is the spec on your 'clubman group A' motor ?" And a grp N car won a rally once over the 34mm cars. A bunch are just N+ i.e. grp N w/ 34mm.
the only diff I see is 34mm and "more sensitive" spending by manuf. teams. but nothing stops them from going whole hog except the need. The main diff is the sensitive spending though. The point being is, a very controversial change was made, and people went with it.
As far as your question, is it not odd to add weight while still refusing to cap the power (for the gearboxes sake)... keeping 40mm and adding weight is like weird but maybe I dont understand it.
but at any rate if you did want to do it, 2800 is very doable in any of those cases. Are cars being weighed at in-controls to service ?
In any case, even a WRC car is a cap on the current open class (which is essentially absolutely and completely unlimited except active front/rear diffs).
2800/34mm/no sequential (for all wheel drive turbo "open" only) would make things pretty damn interesting (again we're talking sharp edge here). That way, one could in theory still bring a ballasted H-box WRC car but the relatively small incremental speed advantage versus the large $$ spent (against say a decent N+ Evo 6) would make it pretty funny for whomever did it. Kind of like a big risk to get beaten by guys in crappier cars. The group Ns would not be far behind. A well driven maxi-N on min. weight might even be in it. Or even a 900kg <2L non turbo 2wd car with a sequential. Imagine that ?