Length limit for fields

Although this issue is considered here:
http://drupal.org/node/606170
And here:
http://drupal.org/node/1235100

I suppose maximum length should be more than 128, for the pages that have tokens in it.
For example most of my pages' title is like this:
[current-page:page-title] - [current-page:query:first_param] - [current-page:query:second_param] - [current-page:query:third_param] - [site:name]

In this situation field length became 145 characters which can't be added to page title module.
Although the query strings are 4-5 characters each, i can't put them all in my node titles.

That would be good if we can enter 255 characters.

Thank you