He has to be judicious though. Maybe for the first two ties against Barnsley and Reading, because Wembley is so far off, it's been manageable without too much criticism to rotate - as long as the job was eventually done. Next round is a pivotal one in that respect. It seems most people would see the QFs as the time you get serious. However, we've invested a lot of time and effort into this run so far and meeting PL opposition away (good chance we'll meet PL opposition too) and employing an experimental starting line up would be met with a lot of resistance. Martinez is rehabilitated after last season in most people's eyes. If we went down without a decent team out from the off next round then he'd squander that. Hence my remark over political/pragmatic rather than tactical/methodological decision needing to triumph.
As said above: as long as we dont get an elite club at home then a home draw can be negotiated with rotation. Draw any of them home or away (or any other PL team away) and we really need to dispense with experimentation.
We tried to experiment away to a PL side last year and got fingered by Swansea in the 3rd round. I can't see that mistake being made again, at least I'd like to think not