The rebooted Lara isn't as iconic as the old because it refers to the commonly held view that in order for woman to be perceived as an intelligent being she needs to be plain and modest in dress. The reboot submits to that idea. The old Lara design had the confidence to go against that and that's what made the character attractive. The reboot design loses that. This version of Lara is forgettable. What's unique about her now? She just looks like a female gardener going on an adventure.
Plain? You think the actress playing her looks "plain"? She's very attractive. Do you consider plain to be that she doesn't wear a padded bra to make her boobs look bigger or because her ass isn't showing enough?
She's still running around with little clothes on anyway.
And I think you've got it backwards. A lot of shows/films/games actually submit to the idea that in order for a woman to be taken SOMEWHAT seriously, she needs to be sexualized, first and foremost, as a prerequisite for even being CONSIDERED smart or intelligent, or consisting of any other worthwhile qualities. Basically, if there is no baseline for being sexualized, there is no recognition at all (luckily things are different now and women are being considered without being overly sexualized).
The fact that you think this actress is "plain" says a lot about the expectation that women need to be sexualized to even be considered at all.
Also, the fact that the of over-sexualization (ie hotpants) is considered "iconic".. is a disturbing thought. Or that the lack of it makes her character lesser as a result.
This movie might still suck, but I like the idea they're moving in for what to expect for a Lara Croft in 2017. Under the right circumstances, I could see this being a fantastic film.