There are quite a few wide and flat bars now. I just recently tried a Sunline 29.5" flat bar. Didn't dig ghe angles htough - my wrists like my bars rolled more forward, and the flat bar sweeps didn't work well with that.

Compromised with a Race Face 31" bar, 1'2" rise. Stems 70mm, and run upside down to get engative rise. No spacers underneath.

I find this lets me weight the front end very nicely, yet still is balanced and easy to get body weight back when needed.

The wide bars are awesome, and no, they really don't cause issues in tight trees. You get used to them.

A couple spots where I was riding last Friday were physically tighter than the width of my bars. Front wheel lift and turns takes care of getting through those tree sections. (not me in the pic, but you get the idea. about 3" narrower than my bars. no trouble.)